按下数字键，数码管上能够显示相应的数字。

1．基本实验：数码管显示“8279－1”，按下数字键，数码管上显示相应的数字。

2．扩展实验：修改程序8279.ASM。将数码管显示改为“C51-8279”，按下数字键1至8，在数码管上按顺序显示“12345678”八位数字。

-Press the number keys, the digital control can show the corresponding number. 1. Basic experiment: digital display, " 8279-1" , press the number keys, digital tube display the corresponding number. 2. Extension test: modify the program 8279.ASM. The digital display read " C51-8279" , press the number keys 1 to 8, in the order shown on the digital control, " 12345678"　eight figures.