动态扫描键盘,键盘采用矩阵式结构,用KEILC51编译并运行过,可靠性好...

51读写U盘全套技术资料,原理图,KEIL C51原代码-U disk 51 to read and write a full set of technical information, schematics, KEIL C51 original code

这是本人写的一个小程序，在.net下调用vc写的d-This is a small program I wrote in. Net written dll under vc call

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

５１单片机ａｓｍ串口液晶显示器通信程序，已通过测试-51 SCM asm LCD serial communication program, has passed the test

以Silicon Laboratories公司C8051F230单片机为控制核心，采用16路动态扫描方式进行显示的LED大屏幕显示系统的设计方案。采用大功率三极管TIP127进行行驱动，提高了亮度。单片机通过读取外部总线数据，可实现与上位机协同工作，也可以脱离上位机独立工作。高速的单片机系统可显示图象、文字、数字等多种内容，并且通过优化算法实现了上下左右移动，以及百叶窗等特殊效果。-To Silicon Laboratories, C8051F230 microcontroller to control the core, using 16-way dynamic scan mode to display the LED large screen display system design. Carried out using high-power transistor TIP127 line drive to improve the brightness. MCU by reading the external bus data can be realized with the host computer to work, you can also work independently from the host computer. High-speed microcontroller system can display images, text, numbers, and other content, and by optimizing the algorithm of the up and down and move around, as well as blinds and other special effects.

单片机串口中断程序和键盘程序-SCM interrupt procedures and procedures keyboard

NRF24E1的AD模块，其中包含如何加入ISD51代码进行用户代码的调试-NRF24E1 the AD module, which includes instructions on how to join ISD51 code debugging user code

使用PROTEUS仿真的DS1302时钟,与主机同步显示时间,C编写-PROTEUS simulation using the DS1302 clock, display time synchronization with the host, C prepared

红外遥控解码程序，清大家试试看，很容易看懂-Infrared remote control decoding process, money you give it a try, it is easy to understand

c8051f020中使用液晶lcd的程序，经调试通过。液晶采用fyd。-C8051F020 used in liquid crystal lcd procedures adopted by the debugger. LCD using fyd.