PB375 U盘读写汇编程序 性价比超高的U盘读写模块-PB375，兼容CH375读写操作 -PB375 U disk read and write assembler cost-effective ultra-high U-disk read-write module-PB375, read and write compatible with the operation CH375

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