/*******************************************************************************************/ /* instrument :motor instrument 2008.3.10 */ /* Designer :Li Xiang Feng */ /* Chip :MEG48+two 74hc595+five Digital control(show distance) */ /* +nine led(show speed)+ five led (show voltage)+Transistor */ /* Crystal :meg48 8.0000Mhz */ /* Digital control :pc0-pc4 is control ports,QH~QA of 74hc595(u1) is date ports */ /* nine led :pd0 QH~QA of 74hc595(u1) and pd0 is 9 bits date port */ /* five led :pd3~pd7 control bits /* 74hc595(u1)control :Serial Port is mosi ,Clock port is sck,latch port control is pb2 */ /* 74hc595(u1)control :Serial Port is mosi ,Clock port is sck,latch port control is pd0 */ /* speed impluse input:Transistor,Anti-admission, PSA,then input int0(pd2); */ /* voltage sampleinput :adc5(pd5) */
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