write a button control to display program with Keil C Buttons control the digital control 16 keys 8 digital tube

code\key-smg
....\key-smg.c
....\key-smg.hex
....\key-smg.LST
....\key-smg.M51
....\key-smg.OBJ
....\key-smg.Opt
....\key-smg.plg
....\key-smg.Uv2
....\key-smg_Opt.Bak
....\key-smg_Uv2.Bak
code

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