cs319tools/ch3_2com.html at main · cpengb/cs319tools · GitHub

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<head>
    <title>CS319 Practices - Two's Complement Representation</title>
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  <li><a href=".">Home</a></li>
  <li>Two's Complement Representation</li>
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<h2>Two's Complement Representation</h2>
<p>This section includes exercises on converting between 2's complement and decimal. </p>
<p>How to use an exercise:</p>
<ul>
	<li>Follow steps 1-2-3-4, but you may use the "Start" button of an exercise at any time to restart.</li>
        <li>Looking for examples of how to solve a problem? Just click "Start" in step 1, type something for step 2, and move to the step-by-step solution in step 4.</li>
</ul>
<h4>Exercise 1. Convert 8-bit 2's Complement to Decimal</h4>
<p>Reference: <a href="https://youtu.be/yBz7_l1MFj0?t=410" alt="lecture on converting a 2's complement number to decimal" target="_blank">lecture on converting a 2's complement number to decimal</a>.</p>
<table>
  <tr>
    <td>1. Generate a random 8-bit 2's Complement number: </td>
    <td><button id="p1StartBtn" type="button" onclick="p1RandomN()">Start</button></td>
    <td><p id="p1Data"></p></td>
  </tr>
  <tr>
    <td>2. Please convert it to decimal:</td>
    <td>-</td>
    <td><input id="p1Input"></td>
  </tr>
  <tr>
  <td>3. Now check your answer:</td>
  <td><button id="p1CheckBtn" type="button" onclick="p1CheckResult()" disabled="true">Check</button></td>
  <td><p id="p1Result">-</p></td>
  </tr>
  <tr>
  <td>4. Show the solution:</td>
  <td><button id="p1AnswerBtn" type="button" onclick="p1ShowAnswer()" disabled="true">Solution</button></td>
  <td><p id="p1Answer">-</p></td>
  </tr>
<tr>
</table>

<h4>Exercise 2. Convert Decimal to 8-bit 2's Complement</h4>
<p>Reference: <a href="https://youtu.be/wmjx7GhVvTo" alt="lecture on converting a decimal to 2's complement format" target="_blank">lecture on converting a decimal to 2's complement format</a>.</p>
<table>
  <tr>
    <td>1. Generate a random decimal number: </td>
    <td><button id="p2StartBtn" type="button" onclick="p2RandomN()">Start</button></td>
    <td><p id="p2Data"></p></td>
  </tr>
  <tr>
    <td>2. Please convert it to 8-bit 2's Complement:</td>
    <td>-</td>
    <td><input id="p2Input"></td>
  </tr>
  <tr>
  <td>3. Now check your answer:</td>
  <td><button id="p2CheckBtn" type="button" onclick="p2CheckResult()" disabled="true">Check</button></td>
  <td><p id="p2Result">-</p></td>
  </tr>
  <tr>
  <td>4. Show the solution:</td>
  <td><button id="p2AnswerBtn" type="button" onclick="p2ShowAnswer()" disabled="true">Solution</button></td>
  <td><p id="p2Answer">-</p></td>
  </tr>
<tr>
</table>

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<h2>&nbsp;</h2>
<p>
<b>&copy; 2022
Bin Peng</b><br>
Bug reports and comments are welcome: crystal dot peng at park dot edu<br><br>
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Created: November 17, 2018
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