External interrupt data read PS2 keyboard and display on the digital tube, this program only handles numeric keypad. Remaining keys function the user can expand their own, simple to program easy to read and learn, the program does not use parity, Please add their own verification procedures

PS2_数码管显示\PS2
..............\ps2.c
..............\PS2.hex
..............\PS2.lnp
..............\ps2.LST
..............\PS2.M51
..............\ps2.OBJ
..............\PS2.Opt
..............\PS2.plg
..............\PS2.Uv2
..............\PS2_Opt.Bak
..............\PS2_Uv2.Bak
..............\PS2测试.hex
..............\STARTUP.A51
..............\STARTUP.LST
..............\STARTUP.OBJ
PS2_数码管显示

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