tag:blogger.com,1999:blog-69397658518543548052024-02-08T04:49:15.137-08:00ยินดีต้อนรับสู่..เว็บไซต์....คณิตศาสตร์คอมพิวเตอร์ Anonymoushttp://www.blogger.com/profile/16943152592397242640noreply@blogger.comBlogger1125tag:blogger.com,1999:blog-6939765851854354805.post-31219431269111563802012-12-09T03:56:00.000-08:002012-12-09T03:56:35.281-08:00<table border="0" cellpadding="0" cellspacing="0" style="text-align: center; width: 750px;"><tbody>
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<span style="font-family: arial, helvetica, sans-serif; font-size: large;"><b>วิชา คณิตสาสตร์คอมพวเตอร์</b></span></div>
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<b>ระบบเลข</b> เป็น สัญลักษณ์ทางคณิตศาสตร์ ที่แสดงถึงจำนวนต่าง ๆ
ระบบเลขแต่ละระบบมีจำนวนตัวเลขที่ใช้เหมือนกับชื่อของระบบตัวเลขนั้น
และมีฐานของจำนวนเลขตามชื่อของมัน เช่น เลขฐานสอง เลขฐานแปด เลขฐานสิบหก<br />
<br />
<div style="text-align: left;">
<span style="font-family: arial, helvetica, sans-serif; font-size: x-small;"><u>เลขฐา</u></span></div>
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<span style="font-family: arial, helvetica, sans-serif; font-size: x-small;"><u><br /></u></span></div>
<div style="text-align: left;">
<span style="font-family: arial, helvetica, sans-serif; font-size: x-small;"><u>น</u></span></div>
<span style="font-size: xx-small;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">การประมวลผลในคอมพิวเตอร์จะใช้ระบบเลขฐานสอง ที่ประกอบด้วยตัวเลข 2 ตัว คือ เลข 0
และเลข 1 เพราะภายในเครื่องคอมพิวเตอร์ประกอบด้วยวงจรอิเลคทรอนิกส์
ที่มีหลักการทำงานแบบดิจิตอล และใช้ระดับแรงดนไฟฟ้า 2 ระดับ คือ สวิตซ์เปิด (on)
กับสวิตซ์ปิด (off) โดยกำหนดให้สถานะของการ "เปิด" แทนด้วยเลข "0" และ"ปิด"
แทนด้วยเลข "1" ซึ่งเลขฐานสองจำนวนหนึ่งหลัก เราเรียกว่า
"บิต"</span></span></span><br />
<span style="font-size: xx-small;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;"> นอกจากนี้คอมพิวเตอร์ยังมีการใช้งานตัวเลขฐานอื่น
ๆ อีก คือ เลขฐานแปด ที่ประกอบด้วยตัวเลข 8 ตัว คือ 0 ถึง 7 และเลขฐานสิบหก
ที่ประกอบด้วยตัวเลข 0 ถึง 9 และตัวอักษรอีก 6 ตัวคือ A, B, C, D, E และ F
ซึ่งมีค่าเท่ากับเลข 10 ถึง 15 โดยสามารถเปรียบเทียบการใช้เลขฐานสิบกับเลขฐานต่าง ๆ
ได้ตามตารางดังนี้<br /> </span></span></span></td></tr>
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<td valign="top" width="600"><table border="1" cellpadding="1" cellspacing="1" style="background-color: #0cc8f2; border: 1px solid rgb(23, 231, 173); text-align: center; width: 600px;">
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<td bgcolor="#ff0099" width="143"><div style="text-align: center;">
<strong><span style="color: white; font-size: x-small;"><span style="font-family: arial,helvetica,sans-serif;">เลขฐานสิบ</span></span></strong></div>
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<td bgcolor="#ff0099" width="143"><div style="text-align: center;">
<strong><span style="color: white; font-size: x-small;"><span style="font-family: arial,helvetica,sans-serif;">เลขฐานสอง</span></span></strong></div>
</td>
<td bgcolor="#ff0099" width="143"><div style="text-align: center;">
<strong><span style="color: white; font-size: x-small;"><span style="font-family: arial,helvetica,sans-serif;">เลขฐานแปด</span></span></strong></div>
</td>
<td bgcolor="#ff0099" width="143"><div style="text-align: center;">
<strong><span style="color: white; font-size: x-small;"><span style="font-family: arial,helvetica,sans-serif;">เลขฐานสิบหก</span></span></strong></div>
</td></tr>
<tr>
<td bgcolor="#ffcccc" width="143"><div style="text-align: center;">
<span style="font-size: xx-small;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">0</span></span></span></div>
</td>
<td bgcolor="#ffcccc" width="143"><div style="text-align: center;">
<span style="font-size: xx-small;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">0000</span></span></span></div>
</td>
<td bgcolor="#ffcccc" width="143"><div style="text-align: center;">
<span style="font-size: xx-small;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">0</span></span></span></div>
</td>
<td bgcolor="#ffcccc" width="143"><div style="text-align: center;">
<span style="font-size: xx-small;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">0</span></span></span></div>
</td></tr>
<tr>
<td bgcolor="#ffcccc" width="143"><div style="text-align: center;">
<span style="font-size: xx-small;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">1</span></span></span></div>
</td>
<td bgcolor="#ffcccc" width="143"><div style="text-align: center;">
<span style="font-size: xx-small;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">0001</span></span></span></div>
</td>
<td bgcolor="#ffcccc" width="143"><div style="text-align: center;">
<span style="font-size: xx-small;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">1</span></span></span></div>
</td>
<td bgcolor="#ffcccc" width="143"><div style="text-align: center;">
<span style="font-size: xx-small;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">1</span></span></span></div>
</td></tr>
<tr>
<td bgcolor="#ffcccc" width="143"><div style="text-align: center;">
<span style="font-size: xx-small;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">2</span></span></span></div>
</td>
<td bgcolor="#ffcccc" width="143"><div style="text-align: center;">
<span style="font-size: xx-small;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">0010</span></span></span></div>
</td>
<td bgcolor="#ffcccc" width="143"><div style="text-align: center;">
<span style="font-size: xx-small;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">2</span></span></span></div>
</td>
<td bgcolor="#ffcccc" width="143"><div style="text-align: center;">
<span style="font-size: xx-small;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">2</span></span></span></div>
</td></tr>
<tr>
<td bgcolor="#ffcccc" width="143"><div style="text-align: center;">
<span style="font-size: xx-small;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">3</span></span></span></div>
</td>
<td bgcolor="#ffcccc" width="143"><div style="text-align: center;">
<span style="font-size: xx-small;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">0011</span></span></span></div>
</td>
<td bgcolor="#ffcccc" width="143"><div style="text-align: center;">
<span style="font-size: xx-small;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">3</span></span></span></div>
</td>
<td bgcolor="#ffcccc" width="143"><div style="text-align: center;">
<span style="font-size: xx-small;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">3</span></span></span></div>
</td></tr>
<tr>
<td bgcolor="#ffcccc" width="143"><div style="text-align: center;">
<span style="font-size: xx-small;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">4</span></span></span></div>
</td>
<td bgcolor="#ffcccc" width="143"><div style="text-align: center;">
<span style="font-size: xx-small;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">0100</span></span></span></div>
</td>
<td bgcolor="#ffcccc" width="143"><div style="text-align: center;">
<span style="font-size: xx-small;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">4</span></span></span></div>
</td>
<td bgcolor="#ffcccc" width="143"><div style="text-align: center;">
<span style="font-size: xx-small;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">4</span></span></span></div>
</td></tr>
<tr>
<td bgcolor="#ffcccc" width="143"><div style="text-align: center;">
<span style="font-size: xx-small;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">5</span></span></span></div>
</td>
<td bgcolor="#ffcccc" width="143"><div style="text-align: center;">
<span style="font-size: xx-small;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">0101</span></span></span></div>
</td>
<td bgcolor="#ffcccc" width="143"><div style="text-align: center;">
<span style="font-size: xx-small;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">5</span></span></span></div>
</td>
<td bgcolor="#ffcccc" width="143"><div style="text-align: center;">
<span style="font-size: xx-small;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">5</span></span></span></div>
</td></tr>
<tr>
<td bgcolor="#ffcccc" width="143"><div style="text-align: center;">
<span style="font-size: xx-small;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">6</span></span></span></div>
</td>
<td bgcolor="#ffcccc" width="143"><div style="text-align: center;">
<span style="font-size: xx-small;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">0110</span></span></span></div>
</td>
<td bgcolor="#ffcccc" width="143"><div style="text-align: center;">
<span style="font-size: xx-small;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">6</span></span></span></div>
</td>
<td bgcolor="#ffcccc" width="143"><div style="text-align: center;">
<span style="font-size: xx-small;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">6</span></span></span></div>
</td></tr>
<tr>
<td bgcolor="#ffcccc" width="143"><div style="text-align: center;">
<span style="font-size: xx-small;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">7</span></span></span></div>
</td>
<td bgcolor="#ffcccc" width="143"><div style="text-align: center;">
<span style="font-size: xx-small;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">0111</span></span></span></div>
</td>
<td bgcolor="#ffcccc" width="143"><div style="text-align: center;">
<span style="font-size: xx-small;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">7</span></span></span></div>
</td>
<td bgcolor="#ffcccc" width="143"><div style="text-align: center;">
<span style="font-size: xx-small;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">7</span></span></span></div>
</td></tr>
<tr>
<td bgcolor="#ffcccc" width="143"><div style="text-align: center;">
<span style="font-size: xx-small;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">8</span></span></span></div>
</td>
<td bgcolor="#ffcccc" width="143"><div style="text-align: center;">
<span style="font-size: xx-small;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">1000</span></span></span></div>
</td>
<td bgcolor="#ffcccc" width="143"><div style="text-align: center;">
<span style="font-size: xx-small;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">10</span></span></span></div>
</td>
<td bgcolor="#ffcccc" width="143"><div style="text-align: center;">
<span style="font-size: xx-small;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">8</span></span></span></div>
</td></tr>
<tr>
<td bgcolor="#ffcccc" width="143"><div style="text-align: center;">
<span style="font-size: xx-small;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">9</span></span></span></div>
</td>
<td bgcolor="#ffcccc" width="143"><div style="text-align: center;">
<span style="font-size: xx-small;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">1001</span></span></span></div>
</td>
<td bgcolor="#ffcccc" width="143"><div style="text-align: center;">
<span style="font-size: xx-small;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">11</span></span></span></div>
</td>
<td bgcolor="#ffcccc" width="143"><div style="text-align: center;">
<span style="font-size: xx-small;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">9</span></span></span></div>
</td></tr>
<tr>
<td bgcolor="#ffcccc" width="143"><div style="text-align: center;">
<span style="font-size: xx-small;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">10</span></span></span></div>
</td>
<td bgcolor="#ffcccc" width="143"><div style="text-align: center;">
<span style="font-size: xx-small;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">1010</span></span></span></div>
</td>
<td bgcolor="#ffcccc" width="143"><div style="text-align: center;">
<span style="font-size: xx-small;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">12</span></span></span></div>
</td>
<td bgcolor="#ffcccc" width="143"><div style="text-align: center;">
<span style="font-size: xx-small;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">A</span></span></span></div>
</td></tr>
<tr>
<td bgcolor="#ffcccc" width="143"><div style="text-align: center;">
<span style="font-size: xx-small;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">11</span></span></span></div>
</td>
<td bgcolor="#ffcccc" width="143"><div style="text-align: center;">
<span style="font-size: xx-small;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">1011</span></span></span></div>
</td>
<td bgcolor="#ffcccc" width="143"><div style="text-align: center;">
<span style="font-size: xx-small;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">13</span></span></span></div>
</td>
<td bgcolor="#ffcccc" width="143"><div style="text-align: center;">
<span style="font-size: xx-small;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">B</span></span></span></div>
</td></tr>
<tr>
<td bgcolor="#ffcccc" width="143"><div style="text-align: center;">
<span style="font-size: xx-small;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">12</span></span></span></div>
</td>
<td bgcolor="#ffcccc" width="143"><div style="text-align: center;">
<span style="font-size: xx-small;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">1100</span></span></span></div>
</td>
<td bgcolor="#ffcccc" width="143"><div style="text-align: center;">
<span style="font-size: xx-small;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">14</span></span></span></div>
</td>
<td bgcolor="#ffcccc" width="143"><div style="text-align: center;">
<span style="font-size: xx-small;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">C</span></span></span></div>
</td></tr>
<tr>
<td bgcolor="#ffcccc" width="143"><div style="text-align: center;">
<span style="font-size: xx-small;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">13</span></span></span></div>
</td>
<td bgcolor="#ffcccc" width="143"><div style="text-align: center;">
<span style="font-size: xx-small;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">1101</span></span></span></div>
</td>
<td bgcolor="#ffcccc" width="143"><div style="text-align: center;">
<span style="font-size: xx-small;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">15</span></span></span></div>
</td>
<td bgcolor="#ffcccc" width="143"><div style="text-align: center;">
<span style="font-size: xx-small;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">D</span></span></span></div>
</td></tr>
<tr>
<td bgcolor="#ffcccc" width="143"><div style="text-align: center;">
<span style="font-size: xx-small;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">14</span></span></span></div>
</td>
<td bgcolor="#ffcccc" width="143"><div style="text-align: center;">
<span style="font-size: xx-small;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">1110</span></span></span></div>
</td>
<td bgcolor="#ffcccc" width="143"><div style="text-align: center;">
<span style="font-size: xx-small;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">16</span></span></span></div>
</td>
<td bgcolor="#ffcccc" width="143"><div style="text-align: center;">
<span style="font-size: xx-small;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">E</span></span></span></div>
</td></tr>
<tr>
<td bgcolor="#ffcccc" width="143"><div style="text-align: center;">
<span style="font-size: xx-small;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">15</span></span></span></div>
</td>
<td bgcolor="#ffcccc" width="143"><div style="text-align: center;">
<span style="font-size: xx-small;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">1111</span></span></span></div>
</td>
<td bgcolor="#ffcccc" width="143"><div style="text-align: center;">
<span style="font-size: xx-small;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">17</span></span></span></div>
</td>
<td bgcolor="#ffcccc" width="143"><div style="text-align: center;">
<span style="font-size: xx-small;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">F</span></span></span></div>
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</tbody></table>
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</tbody></table>
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<td valign="top" width="575"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">ระบบเลขฐานสอง คือ ระบบตัวเลขที่มีค่าฐานเป็นสอง
มีสัญญลักษณ์ 2 ตัว คือ 0 กับ 1 ค่าตามตำแหน่งของส่วนที่เป็นจำนวนเต็มของเลขฐานสอง
คือ </span></span></td></tr>
<tr>
<td height="45" valign="center" width="575"><div align="center">
<strong><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;"> ตารางเปรียบเทียบเลขฐานสอง</span></span></strong></div>
</td></tr>
<tr>
<td valign="top" width="575"><table align="center" border="1" bordercolor="#9900ff" style="width: 300px;">
<tbody>
<tr>
<td bgcolor="#0066ff" width="310"><div align="center">
<span style="color: white;"><strong><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">เลขฐานสิบ</span></span></strong></span></div>
</td>
<td bgcolor="#0066ff" width="310"><div align="center">
<span style="color: white;"><strong><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">เเลขฐานสอง</span></span></strong></span></div>
</td></tr>
<tr>
<td bgcolor="#ccffff" width="310"><div align="center">
<span style="color: #ff0033;"><strong><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">0</span></span></strong></span></div>
</td>
<td bgcolor="#ccffff" width="310"><div align="center">
<span style="color: #ff0033;"><strong><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">00</span></span></strong></span></div>
</td></tr>
<tr>
<td bgcolor="#ccffff" width="310"><div align="center">
<span style="color: #ff0033;"><strong><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">1</span></span></strong></span></div>
</td>
<td bgcolor="#ccffff" width="310"><div align="center">
<span style="color: #ff0033;"><strong><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">01</span></span></strong></span></div>
</td></tr>
<tr>
<td bgcolor="#ccffff" width="310"><div align="center">
<span style="color: #ff0033;"><strong><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">2</span></span></strong></span></div>
</td>
<td bgcolor="#ccffff" width="310"><div align="center">
<span style="color: #ff0033;"><strong><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">10</span></span></strong></span></div>
</td></tr>
<tr>
<td bgcolor="#ccffff" width="310"><div align="center">
<span style="color: #ff0033;"><strong><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">3</span></span></strong></span></div>
</td>
<td bgcolor="#ccffff" width="310"><div align="center">
<span style="color: #ff0033;"><strong><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">11</span></span></strong></span></div>
</td></tr>
<tr>
<td bgcolor="#ccffff" width="310"><div align="center">
<span style="color: #ff0033;"><strong><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">4</span></span></strong></span></div>
</td>
<td bgcolor="#ccffff" width="310"><div align="center">
<span style="color: #ff0033;"><strong><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">100</span></span></strong></span></div>
</td></tr>
<tr>
<td bgcolor="#ccffff" width="310"><div align="center">
<span style="color: #ff0033;"><strong><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">5</span></span></strong></span></div>
</td>
<td bgcolor="#ccffff" width="310"><div align="center">
<span style="color: #ff0033;"><strong><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">101</span></span></strong></span></div>
</td></tr>
<tr>
<td bgcolor="#ccffff" width="310"><div align="center">
<span style="color: #ff0033;"><strong><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">6</span></span></strong></span></div>
</td>
<td bgcolor="#ccffff" width="310"><div align="center">
<span style="color: #ff0033;"><strong><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">110</span></span></strong></span></div>
</td></tr>
<tr>
<td bgcolor="#ccffff" width="310"><div align="center">
<span style="color: #ff0033;"><strong><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">7</span></span></strong></span></div>
</td>
<td bgcolor="#ccffff" width="310"><div align="center">
<span style="color: #ff0033;"><strong><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">111</span></span></strong></span></div>
</td></tr>
<tr>
<td bgcolor="#ccffff" width="310"><div align="center">
<span style="color: #ff0033;"><strong><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">8</span></span></strong></span></div>
</td>
<td bgcolor="#ccffff" width="310"><div align="center">
<span style="color: #ff0033;"><strong><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">1000</span></span></strong></span></div>
</td></tr>
<tr>
<td bgcolor="#ccffff" width="310"><div align="center">
<span style="color: #ff0033;"><strong><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">9</span></span></strong></span></div>
</td>
<td bgcolor="#ccffff" width="310"><div align="center">
<span style="color: #ff0033;"><strong><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">1001</span></span></strong></span></div>
</td></tr>
</tbody></table>
<br />
<table border="0" cellpadding="0" cellspacing="0" style="text-align: left; width: 805px;"><tbody>
<tr>
<td height="73" valign="top" width="606"><div align="center">
<span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">ระบบเลขฐานแปด เป็นระบบตัวเลขที่มีค่าฐานเป็นแปด มีตัวเลขอยู่ 8 ตัว คือ<br /><span style="color: blue;"><strong>0, 1, 2, 3, 4, 5, 6,
7</strong></span></span></span><span style="font-size: xx-small;"><br /><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">ซึ่งสามารถเปรียบเทียบค่าเลขฐานได้ตามตาราง </span></span></span></div>
</td></tr>
<tr><td height="245" valign="top" width="606"><br />
<table align="center" border="2" bordercolor="#ff0000" cellpadding="2" cellspacing="0" style="width: 351px;">
<tbody>
<tr>
<td bgcolor="#00ccff" valign="center" width="104"><div align="center">
<span style="color: white;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">เลขฐานสิบ</span></span></span></div>
</td>
<td bgcolor="#00ccff" valign="center" width="116"><div align="center">
<span style="color: white;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">เลขฐานสอง</span></span></span></div>
</td>
<td bgcolor="#00ccff" valign="center" width="109"><div align="center">
<span style="color: white;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">เลขฐานแปด</span></span></span></div>
</td></tr>
<tr>
<td bgcolor="#99ffff" valign="center" width="104"><div align="center">
<span style="color: #ff0066;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">0
</span></span></span></div>
</td>
<td bgcolor="#99ffff" valign="center" width="116"><div align="center">
<span style="color: #ff0066;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">000</span></span></span></div>
</td>
<td bgcolor="#99ffff" valign="center" width="109"><div align="center">
<span style="color: #ff0066;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">0</span></span></span></div>
</td></tr>
<tr>
<td bgcolor="#99ffff" valign="center" width="104"><div align="center">
<span style="color: #ff0066;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">1</span></span></span></div>
</td>
<td bgcolor="#99ffff" valign="center" width="116"><div align="center">
<span style="color: #ff0066;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">001</span></span></span></div>
</td>
<td bgcolor="#99ffff" valign="center" width="109"><div align="center">
<span style="color: #ff0066;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">1</span></span></span></div>
</td></tr>
<tr>
<td bgcolor="#99ffff" valign="center" width="104"><div align="center">
<span style="color: #ff0066;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">2</span></span></span></div>
</td>
<td bgcolor="#99ffff" valign="center" width="116"><div align="center">
<span style="color: #ff0066;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">010</span></span></span></div>
</td>
<td bgcolor="#99ffff" valign="center" width="109"><div align="center">
<span style="color: #ff0066;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">2</span></span></span></div>
</td></tr>
<tr>
<td bgcolor="#99ffff" valign="center" width="104"><div align="center">
<span style="color: #ff0066;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">3</span></span></span></div>
</td>
<td bgcolor="#99ffff" valign="center" width="116"><div align="center">
<span style="color: #ff0066;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">011</span></span></span></div>
</td>
<td bgcolor="#99ffff" valign="center" width="109"><div align="center">
<span style="color: #ff0066;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">3</span></span></span></div>
</td></tr>
<tr>
<td bgcolor="#99ffff" valign="center" width="104"><div align="center">
<span style="color: #ff0066;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">4</span></span></span></div>
</td>
<td bgcolor="#99ffff" valign="center" width="116"><div align="center">
<span style="color: #ff0066;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">100</span></span></span></div>
</td>
<td bgcolor="#99ffff" valign="center" width="109"><div align="center">
<span style="color: #ff0066;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">4</span></span></span></div>
</td></tr>
<tr>
<td bgcolor="#99ffff" valign="center" width="104"><div align="center">
<span style="color: #ff0066;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">5</span></span></span></div>
</td>
<td bgcolor="#99ffff" valign="center" width="116"><div align="center">
<span style="color: #ff0066;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">101</span></span></span></div>
</td>
<td bgcolor="#99ffff" valign="center" width="109"><div align="center">
<span style="color: #ff0066;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">5</span></span></span></div>
</td></tr>
<tr>
<td bgcolor="#99ffff" valign="center" width="104"><div align="center">
<span style="color: #ff0066;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">6</span></span></span></div>
</td>
<td bgcolor="#99ffff" valign="center" width="116"><div align="center">
<span style="color: #ff0066;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">110</span></span></span></div>
</td>
<td bgcolor="#99ffff" valign="center" width="109"><div align="center">
<span style="color: #ff0066;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">6</span></span></span></div>
</td></tr>
<tr>
<td bgcolor="#99ffff" valign="center" width="104"><div align="center">
<span style="color: #ff0066;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">7</span></span></span></div>
</td>
<td bgcolor="#99ffff" valign="center" width="116"><div align="center">
<span style="color: #ff0066;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">111</span></span></span></div>
</td>
<td bgcolor="#99ffff" valign="center" width="109"><div align="center">
<span style="color: #ff0066;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">7</span></span></span></div>
</td></tr>
</tbody></table>
<table border="0" cellpadding="0" cellspacing="0" style="text-align: left; width: 600px;"><tbody>
<tr>
<td height="37" width="590"><div align="center">
<span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">ระบบเลขฐาน 16 มีตัวเลขอยู่ 16 ตัว
คือ</span></span></div>
</td></tr>
<tr>
<td width="590"><table border="0" cellpadding="0" cellspacing="0" style="width: 599px;">
<tbody>
<tr>
<td height="33" width="599"><div align="center">
<strong><span style="color: #ff0033; font-size: medium;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">0
1 2 3 4 5 6 7 8 9 A B C D E
F</span></span></span></strong></div>
</td></tr>
<tr>
<td height="43" width="599"><div align="center">
<strong><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">ตาราง
เปรียบเทียบเลขฐานสิบหก</span></span></strong></div>
</td></tr>
<tr>
<td height="33" width="599"><table align="center" bgcolor="#ccffff" border="2" bordercolor="#ffcccc" cellpadding="2" cellspacing="0" style="width: 371px;">
<tbody>
<tr>
<td bgcolor="#0066ff" width="106"><div align="center">
<span style="color: #ffffcc; font-size: x-small;"><strong><span style="font-family: arial,helvetica,sans-serif;">เลขฐานสิบ</span></strong></span></div>
</td>
<td bgcolor="#0066ff" width="118"><div align="center">
<strong><span style="color: white;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">เลขฐานสอง</span></span></span></strong></div>
</td>
<td bgcolor="#0066ff" width="125"><div align="center">
<span style="color: #ffffcc; font-size: x-small;"><strong><span style="font-family: arial,helvetica,sans-serif;">เลขฐานสิบหก</span></strong></span></div>
</td></tr>
<tr>
<td bgcolor="#ccffff" bordercolor="#6600cc" width="106"><div align="center">
<span style="color: #ff0066;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">0</span></span></span></div>
</td>
<td width="118"><div align="center">
<span style="color: #ff0066;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">0000</span></span></span></div>
</td>
<td width="125"><div align="center">
<span style="color: #ff0066;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">0</span></span></span></div>
</td></tr>
<tr>
<td width="106"><div align="center">
<span style="color: #ff0066;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">1</span></span></span></div>
</td>
<td width="118"><div align="center">
<span style="color: #ff0066;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">0001</span></span></span></div>
</td>
<td width="125"><div align="center">
<span style="color: #ff0066;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">1</span></span></span></div>
</td></tr>
<tr>
<td width="106"><div align="center">
<span style="color: #ff0066;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">2</span></span></span></div>
</td>
<td width="118"><div align="center">
<span style="color: #ff0066;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">0010</span></span></span></div>
</td>
<td width="125"><div align="center">
<span style="color: #ff0066;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">2</span></span></span></div>
</td></tr>
<tr>
<td width="106"><div align="center">
<span style="color: #ff0066;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">3</span></span></span></div>
</td>
<td width="118"><div align="center">
<span style="color: #ff0066;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">0011</span></span></span></div>
</td>
<td width="125"><div align="center">
<span style="color: #ff0066;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">3</span></span></span></div>
</td></tr>
<tr>
<td width="106"><div align="center">
<span style="color: #ff0066;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">4</span></span></span></div>
</td>
<td width="118"><div align="center">
<span style="color: #ff0066;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">0100</span></span></span></div>
</td>
<td width="125"><div align="center">
<span style="color: #ff0066;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">4</span></span></span></div>
</td></tr>
<tr>
<td width="106"><div align="center">
<span style="color: #ff0066;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">5</span></span></span></div>
</td>
<td width="118"><div align="center">
<span style="color: #ff0066;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">0101</span></span></span></div>
</td>
<td width="125"><div align="center">
<span style="color: #ff0066;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">5</span></span></span></div>
</td></tr>
<tr>
<td width="106"><div align="center">
<span style="color: #ff0066;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">6</span></span></span></div>
</td>
<td width="118"><div align="center">
<span style="color: #ff0066;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">0110</span></span></span></div>
</td>
<td width="125"><div align="center">
<span style="color: #ff0066;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">6</span></span></span></div>
</td></tr>
<tr>
<td width="106"><div align="center">
<span style="color: #ff0066;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">7</span></span></span></div>
</td>
<td width="118"><div align="center">
<span style="color: #ff0066;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">0111</span></span></span></div>
</td>
<td width="125"><div align="center">
<span style="color: #ff0066;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">7</span></span></span></div>
</td></tr>
<tr>
<td width="106"><div align="center">
<span style="color: #ff0066;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">8</span></span></span></div>
</td>
<td width="118"><div align="center">
<span style="color: #ff0066;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">1000</span></span></span></div>
</td>
<td width="125"><div align="center">
<span style="color: #ff0066;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">8</span></span></span></div>
</td></tr>
<tr>
<td width="106"><div align="center">
<span style="color: #ff0066;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">9</span></span></span></div>
</td>
<td width="118"><div align="center">
<span style="color: #ff0066;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">1001</span></span></span></div>
</td>
<td width="125"><div align="center">
<span style="color: #ff0066;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">9</span></span></span></div>
</td></tr>
<tr>
<td width="106"><div align="center">
<span style="color: #ff0066;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">10</span></span></span></div>
</td>
<td width="118"><div align="center">
<span style="color: #ff0066;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">1010</span></span></span></div>
</td>
<td width="125"><div align="center">
<span style="color: #ff0066;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">A</span></span></span></div>
</td></tr>
<tr>
<td width="106"><div align="center">
<span style="color: #ff0066;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">11</span></span></span></div>
</td>
<td width="118"><div align="center">
<span style="color: #ff0066;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">1011</span></span></span></div>
</td>
<td width="125"><div align="center">
<span style="color: #ff0066;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">B</span></span></span></div>
</td></tr>
<tr>
<td width="106"><div align="center">
<span style="color: #ff0066;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">12</span></span></span></div>
</td>
<td width="118"><div align="center">
<span style="color: #ff0066;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">1100</span></span></span></div>
</td>
<td width="125"><div align="center">
<span style="color: #ff0066;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">C</span></span></span></div>
</td></tr>
<tr>
<td width="106"><div align="center">
<span style="color: #ff0066;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">13</span></span></span></div>
</td>
<td width="118"><div align="center">
<span style="color: #ff0066;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">1101</span></span></span></div>
</td>
<td width="125"><div align="center">
<span style="color: #ff0066;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">D</span></span></span></div>
</td></tr>
<tr>
<td width="106"><div align="center">
<span style="color: #ff0066;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">14</span></span></span></div>
</td>
<td width="118"><div align="center">
<span style="color: #ff0066;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">1110</span></span></span></div>
</td>
<td width="125"><div align="center">
<span style="color: #ff0066;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">E</span></span></span></div>
</td></tr>
<tr>
<td width="106"><div align="center">
<span style="color: #ff0066;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">15</span></span></span></div>
</td>
<td width="118"><div align="center">
<span style="color: #ff0066;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">1111</span></span></span></div>
</td>
<td width="125"><div align="center">
<span style="color: #ff0066;"><span style="font-family: arial,helvetica,sans-serif;"><span style="font-size: x-small;">F</span></span></span></div>
</td></tr>
</tbody></table>
</td></tr>
</tbody></table>
</td></tr>
</tbody></table>
</td></tr>
</tbody></table>
</td></tr>
</tbody></table>
Anonymoushttp://www.blogger.com/profile/16943152592397242640noreply@blogger.com0