AT89C51 is used to make a manual counter, on AT89C51 P3.7 pin by one light touch switch, as button of manual counting, MCU P2.0 - Yin digital tube, P2.7 by one count as 00-99, according to single digits with MCU P0.0 - total Yin P0.7 by one digital tube, as 00-99 count ten digits display,

CodePudding user response:

Come on, bosses, begging please

CodePudding user response:

8051 assembly is not hard to do this is very simple, P3_7 external pull then LED on best triode drive,