c8051f410开发和使用，通过CH452芯片扩展数码管使得能在数码管上显示数字。-The c8051f410 extensions and use:though CH452 so that LED light.

是fm256存储器的读写函数和ch452显示函数-Is fm256 memory read and write functions and ch452 display function

基于MSP430单片机的CH452芯片驱动薄膜键盘，诺基亚5110屏幕显示，硬件亲测可用。-CH452 based on MSP430 MCU chip driver membrane keyboard, nokia 5110 screen display, the hardware test available.