TL549驱动程序,定义一下引脚直接拿来用

7279和TLC549数字电压表，由51单片机控制的，通过模数TL549采样制作的电压表，同时由7279控制的数码管显示-7279, and TLC549 digital voltage meter, controlled by the microcontroller 51 through the production of modulus TL549 sampling voltmeter, accompanied by a 7279-controlled LED display

TLC549汇编程序，试过的，可以直接用的-TLC549 assembler, tried, and can be directly used