基于CH451的键盘扫描程序设计采用AVR单片机ATmega16进行读取CH451的接收到的按键值，CH451可以实现8*8矩阵键盘输入，且带有中断提醒，接收到的按键值在12864液晶上显示。程序中采用的是2*3矩阵。系统采用AVR Studio+WinAVR构成的AVR GCC编译环境。-CH451 based keyboard scanner design uses AVR microcontroller ATmega16 reads received the key value CH451, CH451 can achieve 8* 8 matrix keyboard input, and with a break reminder, received key value is displayed on the LCD 12864. The program uses a 2* 3 matrix. The system uses AVR GCC compiler environment AVR Studio+WinAVR composition.