51 microcontroller matrix keyboard simple calculator C language based program

66-矩阵键盘简易计算器
.....................\delay.c
.....................\delay.h
.....................\display.c
.....................\display.h
.....................\keyboard.c
.....................\keyboard.h
.....................\main.c
.....................\obj
.....................\...\delay.lst
.....................\...\delay.obj
.....................\...\display.lst
.....................\...\display.obj
.....................\...\keyboard.lst
.....................\...\keyboard.obj
.....................\...\main.lst
.....................\...\main.obj
.....................\...\矩阵键盘简易计算器
.....................\...\矩阵键盘简易计算器.hex
.....................\...\矩阵键盘简易计算器.lnp
.....................\...\矩阵键盘简易计算器.m51
.....................\...\矩阵键盘简易计算器.plg
.....................\矩阵键盘简易计算器.Opt
.....................\矩阵键盘简易计算器.Uv2
.....................\矩阵键盘简易计算器.plg
.....................\矩阵键盘简易计算器_Opt.Bak
.....................\矩阵键盘简易计算器_Uv2.Bak

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