实时钟 实时钟

TEST PWM duty with PIC16F877A using CCP1 with xtal = 20 MHz, compiler: CCS C 4.068

本文主要介绍了利用RS232和CAN总线协议转换组建CAN控制网络

LED常用总线类型资料 DMX512 SPI IIC DALI 485等LED控制工程资料-LED common bus type data DMX512 SPI IIC DALI 485 information such as LED control engineering

数字复接就是把两个或两个以上的支路数字信号按时分复接方式合并成单一的合路数字信号。-Digital multiplexer is to slip two or more digital signals in time division multiplexing access method into a single co-channel digital signals.

PKE（被动无钥门禁系统，汽车车门控制）整个系统基站部分原理图。-PKE (passive-keyless-entry system, car door control) base station part of the whole system schematic.

一个主从mysql热备份的设计方案.内有实现脚本,挺实用的.-A master-slave mysql hot backup design. There is the realization of the script, very useful.

verilog hdl count24 verilog hdl count24 -verilog hdl count24

本文介绍了电流／电压转换芯片MAX472在直流电动机监测系统中的应用-This paper introduces the current/voltage converter MAX472 chip in DC Motor Monitoring System

在无线通信中使用跳频技术是军事通信中最主要的抗干扰手段之一, 而如果系统中能使用合适的中心频率可以快速跟踪跳频变化的带通滤波器将可以明显改善系统的抗干扰性能。文中从实际应用出发, 比较了几种可用于实现带通滤波器快速变频的方案, 选择了简单、实用的开关电容阵改变带通滤波器中心频率的方案-The use of frequency hopping in wireless communication technology is the most important anti-jamming in military communications, one of the means, and if the system can use the appropriate center frequency can be fast-tracked changes in frequency-hopping band-pass filter will be able to significantly improve the system anti-jamming性能. This paper from the actual application, the comparison of several band-pass filter can be used to achieve the rapid conversion of the program, choose a simple, practical switched capacitor array to change the center frequency of band-pass filter program

详细分析和介绍了linux下的bootloader，提供了许多实用信息，是不可多得的好资料-Detailed analysis and presentation of the linux under bootloader, provides many useful information, good information is invaluable