<td>
<input type="button"value="4 "
onClick="addChar(this.form.display, '4')"></td><td>
<input type="button"value="5 "
onClick="addChar(this.form.display, '5')"></td>- <td>
<input type="button"value="6 "
ondick="addChar (this. form. display, '6')"></td><td>
<input type="button"value="* "
onClick="multiply(this.form)"></td></tr>
<tr align=center><td>
<input type="button"value="1 "
onClick="addChar(this.form.display, '1')"></td><td>
<input type="button"value="2 "
onClick="addChar(this.form.display, '2')"></td><td>
<input type="button"value="3 "
onClick="addChar(this.form.display, '3')"></td><td>
<input type="button"value="— "
onClick="subtract(this.form)"></td></tr>
<tr align=center><td>
<input type="button"value="0 "