2×2 VGA视频分配器图纸，Protel 99生产。

使用微芯公司的PIC8F458单片机，用C语言实现B口电平变化中断程序，并且在中断中用C实现步进电机的驱动程序。-The use of Microchip

单片机控制键盘和led，键盘送入的数据在led 上显示，数据满四位后，键入的第5位数据在个位显示，前四位清零。-MCU control the keyboard and led, keyboard into the data led the show, data-4, Type the first five places in the data revealed that four former reset.

x5045看门狗芯片51代码，具有看门口功能，和片内EE读写程序-X5045 chip watchdog 51 code, with a look at the entrance features, and EE chip to read and write procedures

30路遥控开关,按0-30个键分别点亮p0.0-p3.5的灯,32键全灭 可以用此外接驱动后控制30路开关！ 遥控器端口p3.7-30 Road remote control switches, keys, respectively, by 0-30 months p0.0-p3.5 lit the lamp, 32-key body can also take control of 30 after the driver switch! Remote control port p3.7

使用DS12C887时钟芯片设计一个多功能时钟，在液晶上显示年月日星期时分秒并按秒更新，具有闹钟设定到时报警功能，可用按键随时调节各个参数。-DS12C887 clock chip designed to use a multi-functional clock, the LCD displays date and then every second week, when the second update, that time has set the alarm clock function keys can be used at any time adjust the various parameters.

会议计时器，以MCS51单片机为核心，实现会议演讲定时提醒功能，可以进行设定时间，倒计时，暂停，蜂鸣器提醒或灯光提醒等功能-Session timer to MCS51 single-chip microcomputer as the core, the realization of the meeting from time to time to remind the function of speech, you can set time, the countdown, suspension, or a buzzer to remind lighting functions to remind

单片机的USB、232输出口的电路图-USB MCU, 232 outputs of the circuit

该软件介绍了ＭＰＳ４３０Ｆ４系列的单片机的详细参数和用法，利用Ｃ开发更快-the software introduced a series of SCM MPS430F4 detailed parameters and usage, the use of C development faster

步进电机速度控制，根据要求设计步进电机速度曲线-Stepper motor speed control, according to design stepper motor speed curve

8*8键盘检测，我用keilc进行开发的-8* 8 keyboard detection, I used to carry out the development of keilc