stc89c52_sys_time_ok\TIMER.C
....................\WORKSPACE.C
....................\MAIN.C
....................\MAIN.H
....................\SCANKEY.C
....................\SCANLED.C
....................\STC89C52.DSN
....................\PCB示意图.bmp
....................\说明.txt
stc89c52_sys_time_ok