7, auto pulse speed and odometer Using SCM to design a car speed and odometer, can at the same time show the current pulse speed and range, on the basis of the above can be set with the keyboard top speed alarm, when the speed more than set by the buzzer or light alarm. Can use the digital tube or LCD display pulse speed and mileage, speed alarm when can and pulse rate of the public the same set of display devices, free play other circuits. Design tip: car wheel rotation speed, can use the sample program (50- to produce multiple different frequency square wave) to simulate, 8 topic variable frequency square wave generator can also be used to simulate.

第七题counter_of_frequency
..........................\1602.c
..........................\1602.h
..........................\1602.LST
..........................\1602.OBJ
..........................\counter_of_frequency
..........................\counter_of_frequency.hex
..........................\counter_of_frequency.lnp
..........................\counter_of_frequency.M51
..........................\counter_of_frequency.plg
..........................\counter_of_frequency.uvopt
..........................\counter_of_frequency.uvproj
..........................\counter_of_frequency_uvopt.bak
..........................\counter_of_frequency_uvproj.bak
..........................\mian.c
..........................\mian.LST
..........................\mian.OBJ
..........................\mian.__i
..........................\STARTUP.A51
..........................\STARTUP.LST
..........................\STARTUP.OBJ

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