精度为20位的数模转换芯片CS5503数据手册，有需要的朋友可以下来...

单片机汇编语言编写的IC卡读写程序--IC card read/write program for SCM. It is written in assembly language.

128*64液晶屏与单片机的接口程序,液晶屏控制芯片为ks0107,ks0108,实现汉字图形等的显示,其它屏编程思想亦此-128* 64 LCD screen and MCU interface, LCD screen controller chips for ks0107. ks0108 achieve Chinese graphics display, the other screen programming also thinking this

模拟交通灯，并带有数字显示的程序。初始时全为红灯，显示“HELLO”字样。然后交通灯以“红绿、红黄、绿红、黄红”四种状态做循环，而且黄灯会闪烁，每种状态都带有到数记时。当按下P3_2时，变成“红红”状态，并显示“STOP”字样！ -simulated traffic lights and figures with the procedure. When all of the initial red, shows that the "hello" words. Then traffic lights to the "black, red and yellow, green, red, yellow red" state to do four cycle, but the yellow light flashes, each state will have a few to remember when. When pressed P3_2, into a "red" state, and shows that the "STOP" word!

一份51系列单片机的例程，里面包含了每个部分的代码，包括串口通讯，LCD，GPS数据接收处理，DA输出，EEPROM，USB读写等相关的代码。-A 51 series MCU routine, which includes every part of the code, including serial communications, LCD, GPS data receiving and processing, DA output, EEPROM, USB and other related reading and writing code.

c51书籍，在最短时间内学会C语言和单片机。-C51 books, in the shortest possible time C language and Singlechip Society.

FAT16文件系统原理，较详细的说明文件，很好的资料-FAT16 file system principle, more detailed documentation, very good information

主要是LED屏的驱动,户外屏显示,程序中显示四个不停变化的图案.-LED screens are the main driver, outdoor screen display, the program shows the changing pattern of four non-stop.

这是VB编程RS232串口（COM口）控制的D/A(数模转换)转换板的上位机演示程序。通过电脑串口（或其他具有串口的单片机、PLC、DSP）发个简单的可视ASCII指令，便可以方便地控制8个数模转换通道输出设定的电压值。比如,电脑串口输出字符串"C2V2660"到本控制板,则控制板将控制2号通道输出2.66V电压；电脑串口输出字符串"C6V3060"到本控制板,则控制板将控制6号通道输出3.06V电压.指令非常简单，完全不需了解复杂的硬件及时序控制。-This is a VB programming RS232 serial port (COM port) control D/A (digital-analog conversion) conversion board host computer demonstration program. Via the computer serial port (or other serial port of the microcontroller, PLC, DSP) made a simple visual ASCII commands, they can easily control the number of eight-channel DAC output set voltage. For example, the computer serial output string " C2V2660" to this control panel, then the control board will control 2-channel output 2.66V voltage computer serial output string " C6V3060" to this control panel, then the control board will control the 6 channel output voltage is 3.06V. instruction is very simple, completely without understanding of complex hardware and timing control.

avr单片机中TWI主机发送和主机接收程序代码

Atmel SPI Master C51程序-Atmel SPI Master C51 procedures