IDTH (default value is 8)</td>
        <td>The data received by the UART receiver.</td>
    </tr>
    <tr>
        <td>ALU_function</td>
        <td>output</td>
        <td align="center">4</td>
        <td>A binary code to determine the function of the ALU.</td>
    </tr>
    <tr>
        <td>ALU_enable</td>
        <td>output</td>
        <td align="center">1</td>
        <td>A signal to enable the operation of the ALU.</td>
    </tr>
    <tr>
        <td>ALU_clk_enable</td>
        <td>output</td>
      