<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 "