Tools/materials: Haoshun T71-31 electronic cash register.

1. Turn on the radio and the screen will light up.

2. twist the key to the programmed gear.

3. press the enter PLU key.

4. move down to the PLU menu.

5. press the "subtotal" key to enter the programming.

6. enter PLU. Such as 111.

7. Press the "Subtotal" key to confirm after input. The following commodity names, prices, etc. shall be entered as above, and then press "Subtotal" to confirm.

8. After input, turn the key to the sales gear.

9. You can make a bill now. For example, the PLU just entered is 111. Now, enter 111 on the keyboard, and then press the PLU key, and the information such as the name and price of the commodity just entered will appear, and then press the subtotal key, the cash box will automatically pop up and the cash register can be used normally.