AVR单片机密码锁,密码位数不受限制，有计算器功能。-The AVR microcontroller lock, password median unrestricted calculator function.

AVR ATmega digital lock

High-performance, Low-power Atmel AVR 8-bit Microcontroller 􀁺 Advanced RISC Architecture ̶ 131 Powerful Instructions – Most Single-clock Cycle Execution ̶ 32 x 8 General Purpose Working Registers ̶ Fully Static Operation