File list (Check if you may need any files):
单个数码管+矩阵键盘显示-ok
..........................\4X4 KeyBoard (2).DSN
..........................\4X4 KeyBoard (2).PWI
..........................\Last Loaded 4X4 KeyBoard (2).DBK
..........................\Last Loaded TESTkey.DBK
..........................\MAIN.LST
..........................\MAIN.OBJ
..........................\MAIN.c
..........................\MAIN.c.bak
..........................\TEST
..........................\TEST.M51
..........................\TEST.Opt
..........................\TEST.Uv2
..........................\TEST.hex
..........................\TEST.lnp
..........................\TEST.plg
..........................\TEST_Opt.Bak
..........................\TEST_Uv2.Bak
..........................\TESTkey.PWI
..........................\seg.PWI