利用8051芯片制作一个数字电压表，能够测量电压并用4段数码管显示。-Manufactures a digital voltmeter using 8051 chips, can survey the voltage and demonstrate with 4 sections of nixietubes.

8051汇编代码帮助器，对用8051汇编干活的同志有帮助，不用查书了！-8051 assembly code to help, and on the 8051 compilation of working with help of comrades, do not check the book!

该代码为用8051与adc0809实现数字电压表的汇编代码，内附原理电路图-The code for the 8051 digital voltmeter with adc0809 assembly code, included circuit theory