这是一本关于Protel2004的教程,详细介绍了如何使用该软件绘制电路图和PCB板...

超声波测剧驱动 40KHZ 频率 范围达到50CM 以上-Ultrasonic measurement-driven drama 40KHz frequency range to reach more than 50CM

基于中断控制的声光报警器的设计.采用中断方式，设计一个声光报警器的硬件电路和控制程序。程序运行时，一旦8位开关信号量状态满足设定条件，就触发中断，使发光二级管按规律闪烁，同时扬声器播放一段音乐。 硬件设备包括一台微机、一个MFID微机实验箱、一块T型板，2输入四与门 74ls08、8位总线驱动器 74ls245、LM386A音频放大器、排阻、扬声器各一个，发光二极管8个，470uF电容2个、104电容4个，插线若干。 -Interrupt-based control of sound and light alarm design. Using interrupt mode, designing a sound and light alarm hardware circuits and control procedures. The program is running, once the 8-bit switch signal to set the amount of state to meet the conditions to trigger interrupts, so that light-emitting diode flashes according to the law, while speakers play a piece of music. Hardware includes a computer, a computer simulation, MFID box, a T plate, 2 input 4 and gate 74ls08, 8-bit bus driver 74ls245, LM386A audio amplifier, exclusion, speakers of a light-emitting diode 8, 470uF capacitor 2 a, 104 capacitors 4, plug-line number.

短距离无线通信技术zigbee协议栈c源码，Microchip公司版本-short distance wireless communication technologies zigbee protocol stack c source, Microchip version of the company

非常经典~~的 一个~~~~ds1302液晶时钟-Very much a classic ~ ~ ~ ~ ~ ~ ds1302 LCD Clock

南京沁恒公司CH375标准版的C语言源程序-Nanjing Qin Heng Company CH375 Standard Edition C-language source code

数码管设计软件！可以自动生成数码管的编码！支持MCS-51，PIC，AVR，能生成共阳的或共阴的编码，可以是汇编格式和C语言格式！-Digital control design software! The digital control can automatically generate the code! Support for MCS-51, PIC, AVR, can generate a total of yin-yang, or a total coding, which can be compiled format and C language format!

AVR单片机中TWI(I2C)总线操作串行存储器24c02的C语言程序,如果要搞TWI串行总线的可以参考.程序总包括了单片机对24c02的写和读,用ICCAVR开发.-AVR MCU TWI (I2C) serial memory bus to operate 24C02 C-language procedure, if want to TWI Serial Bus can refer to. Procedures include single-chip microcomputer of the total 24C02 write and read, with the development of ICCAVR .

TLC0831A8位A/D转换器(C51单片机语言驱动程序) ，很好用-TLC0831A8-bit A/D converter (C51 microcontroller language driver), with a good

AT91SAM7S256开发板基础demo，已验证-AT91SAM7S256 development board based on demo, verified

51单片机C语言编写的LCD1602的驱动程序，可以显示图形-51 Single-chip C language LCD1602 driver, you can display graphics