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lichengbiao
- atmega48制作的电动车里程表,PB0 PB1 口用作上下按键 PB3为圈数脉冲 脉冲输入用霍尔44E作为脉冲输入,PD作为4位数码管显示端口,有3种显示模式速度、里程、车轮周长-the atmega48 produced electric car odometer, PB0 PB1 used as the up and down buttons PB3 input pulse pulse of the number of laps with Hall, 44E as a pulse inp