Fairchild公司的二极管，三极管原理图库(protel)

MCS-51单片机有5个中断源，其中两个是由-INT0、-INT1引脚输入的外部中断源；另外三个是内部中断源即由T0、T1的溢出引起中断和串行口发送完一个字节或接收到一个字节数据引起中断。触发外部中断有两种方式，即下降沿引起中断或低电平引起中断。当编程TCON中的ITi（i=0、1）为1时，则引起触发的方式为边沿触发方式，反之(ITi=0)为低电平触发方式。每个中断源的中断请求能否得到响应要受两级“开关”的控制，即一个总“开关”-MCS-51 single-chip has five interrupt sources, two of which are by-INT0,-INT1 pin input external interrupt source the other three internal interrupt sources from the T0, T1 overflow caused by the disruption and serial port sending or receiving end of a byte to a byte of data caused by interruption. Triggered external interrupt has two modes, namely, falling edge or low-level disruption caused disruption caused. When programming TCON in ITi (i = 0,1) for the 1:00 has been the subject of a way to trigger the way to the edge of the trigger, on the contrary (ITi = 0) for low-level trigger mode. Each interrupt source interrupt request can be subject to levels in response to

这是sd/mmc卡程序的第三部分，后面还有！-This is the sd/mmc card the third part of the procedure and there are!

使用VB编写的上机位的串口控制,我的串口搞定与大家一起分享快乐.上位机是用VB编的. 我想告诉大家是:其实串口通信也不是什么很难的事,只要用心去搞一定能作好的. -VB prepared on the use of machine-bit serial control, serial port I get to share their happiness with you all. PC is VB series. I want to tell you is: In fact, serial communication is not a difficult thing, as long as intentions to engage in will certainly be able to prepare for.

c51串口发送以及接收数据程序,有利协议实现-C51 serial port to send and receive data procedures, realize favorable agreement

使用基本的c语言对led进行颜色、开关等控制，很好用 -use basic language c led right color, switches and other control, with very good

单片机的程序，关于串口通讯的，对初学者来说说不定有用。-SCM procedures, on the serial communication, and may be useful for beginners.

avr 单片机学习用的 希望有用-avr Singlechip hope to learn useful

AVR 单片机访问SD ,已编译通过了，大家可放心下载-web is good I want code from here.thank every body.

飞思卡尔中断 Codewarrior for HCS12的中断服务程序编写说明-freescale

用AT89S51单片机实现LCD1602显示数字时钟功能，通过按键能调节时分秒、年月日星期。Keil C51开发环境-AT89S51 MCU LCD1602 display with digital clock function, through the buttons can be conditioned every minute, day of week. Keil C51 Development Environment