这是原来的PIC16F877A单片机

HD44780LCD驱动源代码文件,有一定的参考价值.希望大家共同进步.在此也感谢我的同事对我的帮助和支持!谢谢!-HD44780LCD driver source code files, has a certain reference value. I hope that progress can be shared. Here also thank my colleagues for my help and support! Thank you!

在有线电视中实现程控有源滤波器设计。为了充分利用设备和传输线,需要一种具有频率选择的网络―滤波器,将同一线 路上不同的信号分开,在电视机中也需要不同的滤波器(即选择有用信号,抑制无用信号) 。下面利用8051 单片机与12 位分辨率的DAC1208 数模转换芯片相结合的系统实现时间常数可程控有源滤波器设计,阐述了硬件结构与软件设计-In cable television in the realization of program-controlled active filter design. In order to make full use of equipment and transmission lines, the need for a frequency selective network- filter, the same lines separate different signal in the TV also requires a different filter (ie, choice of useful signals and suppress unwanted signals). Following the use of 8051 and 12-bit resolution digital-to-analog converter DAC1208 chip combining system time constant can be program-controlled active filter design, the hardware structure and software design

用MSP430单片机编写的程序，可显示4行汉字-with MSP430 prepared by the procedure will show that four Chinese firms

51通过CH375读写U盘的源码和原理图-51 CH375 literacy through the U-source and schematics

mcu_PPP.rar是在M68HC08单片机上编写的TCP/IP协议程序.实现了SLIP、PPP、ICMP、UDP、TCP网络协议。 -M68HC08 Singlechip mcu_PPP.rar is prepared on TCP/IP protocol procedures. realize a SLIP, PPP, ICMP, UDP, TCP network protocol.

单芯片点对点串行通信（max232）单芯片点对点串行通信（max232）单芯片点对点串行通信（max232）

msp430f169 中断方式驱动独立键盘-msp430f169 separate keyboard interrupt-driven

51单片机实现7段数码管显示源代码+Sch电路原理图-51 Singlechip realize 7 digital tube display source code+ Sch circuit schematic

iccavr的一个实例，帮助初学者熟悉icc熟悉avr单片机-iccavr an example to help beginners familiar with familiar with the avr Singlechip icc

该程序为一arm参考程序,实现在液晶屏上画垂直线,水平线和直线-One arm of the procedure reference procedures realize the LCD screen painting vertical lines, horizontal and straight-line