51个GPIO模拟IIC驱动程序，使用宏来定义硬件引脚，容易…

使用RTX-51 tiny操作系统的em12864液晶驱动程序-use RTX-51 operating system em12864 tiny LCD Driver

基于VRS51L3074的TC35短信息模块驱动程序,程序内有完整的中文字库,支持中英文模式.-SMS-based VRS51L3074 the TC35 module driver program in a complete Chinese font support in English and Chinese patterns.

atmel公司atmega单片机bootloader的源代码-ATmega Atmel single-chip companies bootloader source code

仪器仪表键盘显示模拟系统，用AT89S52芯片作为系统的CPU，控制系统的按键及显示器部分。用8路同相三态双向总线收发器74LS245芯片驱动LED。4X4矩阵键盘作为系统人机交互的重要部分，用于向单片机应用系统输入数据或控制信息，设计4X4矩阵键盘分别对应键码“0-F”。系统可以实现的基本功能包括开机LCD液晶屏幕显示“大专05电子信息X班XXX毕业设计”信息；按下任意一个按键，LCD液晶屏幕显示相应按键的信息。在基本功能的基础上还增加了一个扩展功能，即增加一个LED数码管同步显示相应键码-Show the simulated keyboard instrumentation systems, using AT89S52 chip as a system CPU, system control buttons and display parts. With 8-phase three-state bidirectional bus transceiver 74LS245 chip-driven LED. 4X4 matrix keyboard system as an important part of human-computer interaction, single-chip microcomputer application system used to input data or control information, the design of 4X4 matrix keyboard key code corresponding to

ATMEGA128的LED驱动程序，对自己编写端口驱动的同志有很大的帮助！-ATMEGA128 the LED driver, port driver of their comrades in the preparation of great help!

单片机开发源代码, 单片机开发源代码.-Single-chip development source code, source code to develop single-chip, single-chip development source code.

多种A/D转换芯片在MCU应用中的驱动程序，C语言原代码-multiple A/D converter chip MCU application of the driver, the original C language code

24c16的C51源代码,在KEIL C51上已调试通过-24c16 source of C51, C51 has KEIL through debugging

IC卡的模拟！ IC卡的模拟！-IC