89c51 control point Responder, a host control and customer control, there is answer in and answer time digital display, the time to answer a diode and buzzer prompts a simulation file proteus

抢答器\123456.DSN
......\123456.PWI
......\b
......\b.hex
......\b.lnp
......\b.M51
......\b.Opt
......\b.plg
......\b.Uv2
......\b1.LST
......\b1.OBJ
......\bb.plg
......\b_Opt.Bak
......\b_Uv2.Bak
......\Last Loaded 123456.DBK
......\STARTUP.A51
......\STARTUP.LST
......\STARTUP.OBJ
......\y1.c
......\y1.LST
......\y1.OBJ
......\y1.__i
......\y2.c
......\y2.LST
......\y3.c
......\y3.LST
......\程序b1.c
......\程序b1.LST
......\程序b1.OBJ
......\答辩.ppt
抢答器

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