STM32-based calculator, digital display, to achieve the basic addition and subtraction, multiplication and division, functions have yet to be extended

stm32计算器\hardware\KEY\4X4_key.c
...........\........\...\4X4_key.h
...........\........\LED\led.c
...........\........\...\led.h
...........\SYSTEM\delay\delay.c
...........\......\.....\delay.h
...........\......\sys\sys.c
...........\......\...\sys.h
...........\......\usart\usart.c
...........\......\.....\usart.h
...........\user\test.c
...........\....\test.plg
...........\....\test_Target 1.dep
...........\....\STM32F10x.s
...........\....\test_uvproj.bak
...........\....\test_uvopt.bak
...........\....\JLinkLog.txt
...........\....\lst\STM32F10x.lst
...........\....\...\test.map
...........\....\obj\STM32F10x.o
...........\....\...\delay.d
...........\....\...\delay.crf
...........\....\...\delay.o
...........\....\...\sys.d
...........\....\...\sys.crf
...........\....\...\sys.o
...........\....\...\usart.d
...........\....\...\usart.crf
...........\....\...\usart.o
...........\....\...\led.d
...........\....\...\led.crf
...........\....\...\test.d
...........\....\...\test.crf
...........\....\...\test.tra
...........\....\...\test.sct
...........\....\...\test.lnp
...........\....\...\test.htm
...........\....\...\test.hex
...........\....\...\led.o
...........\....\...\test.plg
...........\....\...\4x4_key.d
...........\....\...\4x4_key.crf
...........\....\...\ExtDll.iex
...........\....\...\4x4_key.o
...........\....\...\test.o
...........\....\...\test.axf
...........\....\test.uvproj
...........\....\test.uvopt
...........\....\说明.txt
...........\hardware\KEY
...........\........\LED
...........\SYSTEM\delay
...........\......\sys
...........\......\usart
...........\user\lst
...........\....\obj
...........\hardware
...........\SYSTEM
...........\user
stm32计算器

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