51 microcontroller as the master chip, electronic calculator. The system to use the LCD1602 as a data input module for 4* 4 matrix keyboard, in addition to simple addition, subtraction, there seeking prescribing Ln Keytone.

电子计算器调试8AT89C51
......................\LCD1602_8.c
......................\LCD1602_8.h
......................\LCD1602_8.LST
......................\LCD1602_8.OBJ
......................\STARTUP.A51
......................\STARTUP.LST
......................\STARTUP.OBJ
......................\电子计算器调试8AT89C51
......................\电子计算器调试8AT89C51.c
......................\电子计算器调试8AT89C51.hex
......................\电子计算器调试8AT89C51.lnp
......................\电子计算器调试8AT89C51.LST
......................\电子计算器调试8AT89C51.M51
......................\电子计算器调试8AT89C51.OBJ
......................\电子计算器调试8AT89C51.Opt
......................\电子计算器调试8AT89C51.plg
......................\电子计算器调试8AT89C51.Uv2
......................\电子计算器调试8AT89C51_Opt.Bak
......................\电子计算器调试8AT89C51_Uv2.Bak

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