文中介绍一种不用光耦就可以实现隔离的方法

1. 完成时／分／秒的依次显示并正确计数，利用六位数码管显示； 2. 时／分／秒各段个位满10正确进位，秒／分能做到满60向前进位，有系统时间清零功能； 3. 定时器：实现整点报时，通过扬声器发出高低报时声音； 4. 时间设置，也就是手动调时功能：当认为时钟不准确时，可以分别对分／时钟进行调整； 5. 闹钟：实现分/时闹钟设置，在时钟到达设定时间时通过扬声器响铃。有静音模式。 -1. Completed/min/sec display and correctly followed by counting, using six digital tube display 2. When/min/sec in the paragraphs of the correct 10-bit binary full, s/sub can do to advance the age of 60-bit, systematic function of the time cleared 3. timers: realize the whole point of time, by the time the level of sound from loudspeakers 4. time settings, which is manually adjusted when the function: When the clock does not consider accurate, they can respectively sub/clock adjustments 5. alarm clock: the realization of sub-/ when the alarm clock settings, settings in the clock arrival time ringing through the loudspeakers. There are silent mode.

一个基于485总线的抢答器系统的设计文档，参加电子竞赛的论文。-based on a 485 bus Responder system design documentation, to participate in the electronic race theses.

本系统主要以沈阳黄页业务管理为基本要求，主要功能包括：1. 业务员及业务经理权限的设定。2. 业务员部门的划分。3. 业务员在线录入信息。4. 企业公告版。5. 站内短信留言。-mainly to the system in Shenyang Yellow Pages business management as the basic requirements, main functions include : 1. Clerks and business manager of the authority set. 2. The clerk division. 3. Information online entry clerk. 4. Business bulletin boards. 5. Station SMS messages.

操作系统资料，算法-operating system information, the algorithm

NiosII软件设计与运行流程,帮助初学者熟悉NIOSII软件的使用和工程的创建，入门级的好资料！-NiosII software design and operation of processes to help beginners NIOSII familiar with the use of software and engineering the creation, entry-level good information!

一款电脑ATx电源设计，使用Protel99打开-ATx a computer power supply design, the use of open Protel99

LCD Driver datasheet The SPF54126A, a 262144-color System-on-Chip (SoC) driver LSI designed for small and medium sizes of TFT LCD display, is capable of supporting up to 176xRGBx220 in resolution which can be achieved by the designated RAM for graphic data. The 528-channel source driver has true 6-bit resolution, which generates 64 Gamma-corrected values by an internal D/A converter. The source driver of SPFD54126A adopts OP-AMP structure to enhance display quality and it cooperates with advanced circuitry techniques to reduce power consumption.

ATMEL基于ARM的芯片选型指南ATMEL基于ARM的芯片选型指南-ARM-based chip ATMEL Selection Guide ATMEL chips based on ARM Selection Guide

无线报警系统的设计-Wireless Alarm System Design

蓝海微芯ARM开发板底板原理图,采用s3c2410处理器-BlueOcean Chipscreen ARM development board backplane schematic diagram, using S3C2410 processor