maxim Chinese companies DS1302ZN information sounds very good

电脑音源切换控制器（带红外功能） 用AT89C251+CD4016切换控制，可控制四路以上的立体音源输入切换，一路立体声输出,有红外遥控PC功能。-Computer audio switch controller (with infrared function) with AT89C251+ CD4016 switch control, can control more than four stereo audio input switch, stereo output along the way, has infrared remote control PC functions.

sed1335fb.c -- Driver for sed1335 lcd control framebuffer device-sed1335fb.c-- Driver for sed1335 lcd cont rol framebuffer device

80C51单片机中利用蜂鸣器实现电子琴的源程序。包含蜂鸣器的datasheet。-80C51 single-chip buzzer realize the use of the source organ. Contains the buzzer datasheet.

用单片机I/O口模拟总线形式的通用驱动程序，用C51编写-MCU I/O simulation generic form of bus drivers, prepared with C51

C8051F005 SMBUS SPI programme for FM25CL04 FM24CL04-C8051F005 SMBUS SPI program for FM25CL0 4 FM24CL04

STM32电路图，有原理图和PCB，稍微处理即可直接去制作。-STM32 circuit, there is schematic and PCB, you can go straight to making a little deal.

使用protel99软件编辑的原理电路图，希望对各位有助于电路图的学习和开发-The use of the principle of circuit protel99 software editor, in the hope you will help the study and development of circuit

实时时钟芯片PCF8563 控制C51源程序-real-time clock chip PCF8563 source control C51

公交车报站系统，点击站点，进行报站，单片机开发-Bus stop system, click the site, the station reported, Microcontroller Development

一个基于at89s51控制用的系统 电路图-AT89S51-based control system circuit diagram