台湾群特温湿度手持仪表软件，做温湿度记录的可以参考，

基于AT89C51的数字时钟，6位LED显示。

CRT驱动IC英文资料,是单片机开发者在开发CRT时的一个重要参考!-CRT driver IC information in English is a single-chip developers in the development of CRT at the time of an important reference!

这是一个单片机开发的包，其中有很多资料，是我搜罗出来的，请大家-This is the development of a single-chip package, in which there is a lot of information out of my collection, please take a look at U.S.

C51 ATAPI-CDROM 驱动程序-C51 ATAPI-CDROM driver

LT-1B msp430开发板例子程序－ADC12_09

sja1000与51单片机的功能实现源代码-sja1000 MCU with 51 of the realization of the function source code

单片机开发，通过1302 18b20 1602液晶显示器，实现闹钟的功能-Single-chip development, through the 1302 18b20 1602 LCD, the realization of an alarm clock function

源码PB做的一个全新的触摸屏系统，请大家试用-PB-source to do an entirely new touch screen system, U.S. trial

conver hull prgram dds

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