4442逻辑加密IC卡读写底层C51程序，

基于80C51和CH375的实现USB打印机驱动器的设计与实现方法-Based on 80C51 and CH375 realize the USB printer driver design and implementation

此源码利用单片机实现智能信号发生器，借鉴借鉴。-use of this source SCM intelligent signal generator, use reference.

BTF020实验程序-1 btf020开发板自带-Experimental procedures BTF020 development board comes with-1 btf020

用51单片机c语言编写的键盘扫描程序-With 51 single-chip c language keyboard scanner

这是atmel公司的89C51SND1C的mp3源程序，flash用的是dataflash，支持fat16/32文件系统-This is the source 89C51SND1C mp3, flash is used dataflash, file system support Acronis

用于Rabbit写Flash设备ID的程序-Rabbit write for Flash device ID procedures

单片机上网原理图-SCM Internet schematics

Provide the operations include Read and Write to the AT25320A, SPI-interface EEPROM with 32k bits,ATMEL Icn.-Provide the operations include Read and Wr/ite to the AT25320A. SPI-interface EEPROM with 32k bits, ATMEL Icn.

at89c5x系列的at89s54的芯片资料-at89c5x series chips at89s54 information

直流电机闭环控制C程序，包括方向、转速的控制和补偿算法等-C closed-loop DC motor control procedures, including direction, speed control and compensation algorithms, etc.