LED显示主文件，其中的显示函数自己编，需msp430打开

93c46eeprom的中文资料和c51原码-93c46eeprom the Chinese information and source decoder

由8051组成的单片机系统通常情况下，P0口分时复用作为地址、数据总线，P2口提供A15-A8即高8位地址，P3口用作第二功能，只有P1口通常用作I/0口。P1口是8位准双向口，它的每一位都可独立地定义为输入或输出，因此既可作为8位的并行I/O口，也可作为8位的输入输出端。当工作在输入方式时，对应位的锁存器必须先置1,才能正确地读到引脚上的信号,否则,执行读引脚指令时,若对应位的锁存器的值为0，读的结果永远为0。-By 8051, composed of single-chip microcomputer system under normal circumstances, P0 timeshare I reuse as address, data bus, P2 I provide A15-A8 high eight address, P3 mouth for the second function, I usually only P1 for I/0 I. P1 I was eight quasi-two-way port, it can be independent of each and every defined as input or output, it can be used as 8-bit parallel I/O port, can also be used as 8-bit input and output side. When the work in the input, the corresponding bit latch must first buy one in order to correctly read the signal pin, or pin the implementation of reading instruction, if the corresponding bit latch the value of 0, Reading the results of Forever to 0.

电子秒表的设计 1、用系统8253定时器提供的55ms定时单位，设计秒表定时程序。 2、有关系统定时方法： PC机系统中的8253定时器0工作于方式3，外部提供一个时钟作为CLK信号, 频率：f=1.1931816MHz。 定时器0输出方波的频率:fout=1.1931816/65536=18.2Hz。 输出方波的周期Tout=1/18.2=54.945ms。8253A每隔55ms引起一次中断-Electronic stopwatch design one, using the system timer 8253 provides 55ms timing units, design stopwatch timing procedures. 2, the system timing method: PC system timer 0 of 8253 working in the way of 3, to provide an external clock as the CLK signal, the frequency: f = 1.1931816MHz. Timer 0 output square wave frequency: fout = 1.1931816/65536 = 18.2Hz. Cycle square wave output Tout = 1/18.2 = 54.945ms. 8253A every 55ms caused a disruption

PADS2005 WORK IN LAYOUT PCB -PADS2005 WORK IN LAYOUT PCB

这个K型热电偶MAX6675的驱动程序，此驱动部分已经在产品中使用，请放心使用-The K-type thermocouple MAX6675 driver, the driver has been part of the use of the product, please rest assured that the use of

飞利浦I2C接口源LPC932

12232的驱动程序，驱动液晶YLF12232F-12,232 drivers, drivers LCD YLF12232F

提取、刷写飞利浦713X系列电视卡EEPROM（识别码）-Extraction, Writing Brush Philips 713X series tv card EEPROM (ID)

51单片机的串口多机通讯设计，包括LCD显示以及可随意添加从机-51 serial single-chip multi-machine communication design, including LCD display and are free to add from the machine

本程序是4位七段显示、3x3键扫实验，正确无误。-4 This procedure is the seventh show, 3x3 keys sweep experiments are correct.