能实现多功能。既可做倒计时秒表,又可进行定时，还可以通过扩展完成其他功能，而且功能的相互转换也十分简单...

基于MCU51与直接数字频率合成芯便AD9850产生5HZ正弦波源程序-Based on MCU51 with Direct Digital Synthesis core will have a 5Hz sine wave source AD9850

本文介绍了两种分频系数为整数或半整数的可控分频器的设计方法。其中之一可以实现50％的奇数分频。利用VHDL语言编程，并用QUARTERS||4.0进行仿真，用 FPGA 芯片实现。 关键词：半整数，可控分频器，VHDL, FPGA -This article describes two kinds of sub-frequency coefficient is an integer or half-integer divider controllable design method. One of them can achieve 50 of the odd-numbered sub-frequency. The use of VHDL language programming, and QUARTERS | | 4.0 simulation, using FPGA chip. Key words: semi-integer, controllable divider, VHDL, FPGA

avr单片机atmega16，用键盘控制，可显示多种不同的跑马灯程序-avr microcontroller atmega16, keyboard control, can display a wide variety of marquees program

基于philips的932单片机的LIN总线程序开发，通俗易懂，简单实用-based on the Philips 932 SCM LIN bus program, accessible, simple and practical

《多功能电能表通信协议》备案文件,DLT645-2007 增补-" Multi-function Watt-hour meter communication protocol" filing documents, DLT645-2007 added to the

STC89C58RD+系列内部eeprom放数据-STC89C58RD+ Series of internal EEPROM data released

基于8051的高精度的秒表汇编程序，从0到60秒，有复位，暂停，累计功能。附加protues连接图-Based on the 8051 compilation of high-precision stopwatch program, from 0 to 60 seconds, a reset, pause, the cumulative function. Additional protues connection diagram

Keil70完全安装文件-Keil70 complete installation

三相无刷电机的PWM控制，通过改变下桥臂的占空比来改变电机的转速。-PWM three-phase brushless motor control, by changing the duty cycle under the bridge arm to change the motor speed.

汉字字库的点阵提取程序,可以转成h格式与0x格式-Chinese characters of the dot-matrix extraction procedures, can be transformed to the format with the 0x format h