Description: 简易电子琴的设计 一、 设计题目： 设计一简易电子琴，要求能够发出1、2、3、4、5、6、7等七个音符。 使用元件：AT89C51、LM324，喇叭，按键等 二、 设计目的 （1）能够对电子电路、电子元器件、印制电路板等方面的知识有进一步的认识，独立对其进行测试与检查。 （2）熟悉8051单片机的内部结构和功能，合理使用其内部寄存器，能够完成相关软件编程设计工作。 （3）为实现预期功能，能够对系统进行快速的调试，并能够对出现的功能故障进行分析，及时修改相关软硬件。 （4）对软件编程、排错调试、焊接技术、相关仪器设备的使用技能等方面得到较全面的锻炼和提高。-simple design of a flower, a design : a simple flower design, request, sent seven notes. Use Element : AT89C51, LM324, speakers, such as two keys, designed (a) to be able to electronic circuits, electronic components, such as printed circuit boards with the knowledge to further understanding of its independent testing and inspection. (2) familiar with the 8051's internal structure and function and the rational use of its internal registers can be completed software programming design work. (3) To achieve the desired functionality, the system can quickly debugging, and the right to function failure analysis, the timely revision of the related hardware and software. (4) The right software programming, debugging and testing of welding technology, equipment related to the use of skills as Platform: |
Size: 9381 |
Author:丹 |
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Description: 在这里详细介绍常用的电路仪器使用方法，对一些刚接触电子的初学习者是难得资料-in detail here commonly used in circuit equipment used method of counting some of the early e-learners is a rare information Platform: |
Size: 475068 |
Author:辛万江 |
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Description: 飞行控制系统方案。整个系统由传感器组、飞控计算机、任务管理计算机、舵机、表决电路等主要部件和电源、外总线、通信设备、地面站等辅助设备组成。无人机、起落架、发动机、任务设备、燃油系统、环控系统等是被监控对象。其中，关键传感器采用相似或者非相似三余度；飞控计算机采用“主备备”式三余度飞控机算机；舵机采用二余度电动舵机；表决逻辑由高可靠性单余度数字逻辑电路和双路开关实现。-Flight Control System program. The entire system is composed of sensors, the flight control computer, task management computer, steering gear, the division circuit components and the main power source, Foreign bus, communications equipment, ground support equipment components. UAV, landing gear, engine, mission equipment, fuel systems, environmental control systems are monitoring targets. Among them, critical sensor similar to three or similar non - I; The flight control computer "equitable preparations," I was three-flight control machine; Rudder I was using two electric steering; vote by the logic of high-reliability and redundancy digital logic circuit and a two-way switch. Platform: |
Size: 580054 |
Author:chengp |
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Description: 适合系统学习OFDM技术。本文设计并实现OFDM通信系统的调制、解调部分的数字电路。采用实验板或自行设计电路进行调试，并采用相关仪器验证。系统整体调试、优化，或就某一部分进行深入研究。-suitable for the systematic study OFDM technology. This paper describes the design and realization of the communication system OFDM modulation, demodulation of the digital circuit. Experimental design their own boards or circuit debugging, and using equipment related to certification. Whole system debugging, optimizing, or on a part-depth study. Platform: |
Size: 1553925 |
Author:王娟 |
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Description: 多功能数字钟电路设计
掌握数字电路系统的设计方法、装调技术及数字钟的功能扩展电路的设计
-multifunctional digital clock circuit design digital circuit design, equipment and technology transfer digital clock function expansion Circuit Design Platform: |
Size: 512934 |
Author:猪猪 |
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Description: 单片机硬件系统设计原则一个单片机应用系统的硬件电路设计包含两部分内容：一是系统扩展，即单片机内部的功能单元，如ROM、RAM、I/O、定时器/计数器、中断系统等不能满足应用系统的要求时，必须在片外进行扩展，选择适当的芯片，设计相应的电路。二是系统的配置，即按照系统功能要求配置外围设备，如键盘、显示器、打印机、A/D、D/A转换器等，要设计合适的接口电路。 -MCU hardware design principles of a system based application system hardware circuit design includes two parts : First, the expansion of internal microcontroller that is the function modules, such as ROM, RAM, I / O, timer / counter, interrupt system can not meet the application requirements, must chip in for expansion, the selection of appropriate chips, The circuit design accordingly. Second, the system configuration, according to the functional requirements of system configuration peripheral equipment, such as keyboards, monitors, printers, A / D, D / A converters, it is necessary to design appropriate interface circuit. Platform: |
Size: 8115 |
Author:wangtian |
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Description: IDE硬盘接口规格书，详细介绍了IDE接口的定义及与外围设备的连接电路图-IDE hard disk interface specifications, detailing the IDE interface definition and peripheral equipment and the connection circuit Platform: |
Size: 965604 |
Author:Jason |
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Description: 测量精度和可靠性是仪器的重要指标，引入数据处理算法后，使许多原来靠硬件电路难以实现的信号处理问题得以解决，从而克服和弥补了包括传感器在内的各个测量环节中硬件本身的缺陷或弱点，提高了仪器的综合性能-measurement accuracy and reliability of the apparatus of the important targets, the introduction of data processing algorithm, Many rely on the original circuit hardware elusive signal processing problems are resolved, thus overcome and compensate for the sensor include the measurement of various aspects of the hardware deficiencies or weaknesses, improve the performance of the equipment Platform: |
Size: 57360 |
Author:12313 |
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Description: 交流电桥的电路结构中，由电阻、电抗元件或
它们的组合构成四臂，并用检流计、耳机或其它仪器作为检验电桥是否平衡的“示零器”．利用交流电桥的平衡条件进行测量，这就是它的基本原理．-AC bridge circuit structure, resistance, reactance components or combinations of them pose four arm and used galvanometers. headphones or other equipment -- as a test of whether the bridge "device is said." AC bridge using the equilibrium condition measurement, which is its basic tenets. Platform: |
Size: 25598 |
Author:艾明 |
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Description: 在这里详细介绍常用的电路仪器使用方法，对一些刚接触电子的初学习者是难得资料-in detail here commonly used in circuit equipment used method of counting some of the early e-learners is a rare information Platform: |
Size: 475136 |
Author:辛万江 |
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Description: 实现USB接口的扩展,因为现在USB接口设备越来越多,而电脑的USB口有限!故可以通过次电路图实现扩展!-USB interface to achieve the expansion, because USB interface equipment more and more, computer USB port limited! it can be achieved through expansion of the circuit diagram time! Platform: |
Size: 100352 |
Author:Delta |
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Description: 遥控器使用方便，功能多．目前已广泛应用在电视机、VCD、DVD、空调等各种家用电器中，且价格便宜，市场上非常容易买到。如果能将遥控器上许多的按键解码出来．用作单片机系统的输入．则解决了常规矩阵键盘线路板过大、布线复杂、占用I／O口过多的弊病。而且通过使用遥控器，操作时可实现人与设备的分离，从而更加方便使用。下面以TC9012编码芯片的遥控器为例。谈谈如何用常用的51系统单片机进行遥控的解码。-Remote easy to use, features and more. Has been widely used in TV, VCD, DVD, air conditioning and other household appliances, and the price cheap, the market is very readily available. If you can remote control many of the key decoder out. Single-chip microcomputer system used for input. The solution of conventional keyboard matrix circuit board is too large, complex wiring, occupied by I/O port too many ills. But also through the use of remote control operation can realize the separation of people and equipment, thus more convenient to use. The following code to TC9012 chip remote control as an example. To talk about how to use the 51 commonly used system for remote control single-chip decoder. Platform: |
Size: 6144 |
Author:nasa008 |
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Description: 闭路电视系统中的控制设备----数字键盘。四维数字键盘说明书-Closed-circuit television system in the control equipment---- the numeric keypad. Four-dimensional digital keyboard manual Platform: |
Size: 378880 |
Author:陈维龙 |
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Description: 红外遥控器已被广泛使用在各种类型的家电产品上，它的出现给使用家器提供了很多的便利。红外遥控系统一般由红外发射装置和红外接受设备两大部分组成。红外发射装置又可由键盘电路、红外编码芯片、电源和红外发射电路组成。红外接收设备可由红外接收电路、红外解码芯片、电源和应用电路组成。通常为了使信号能更好的被传输发送端将基带二进制信号调制为脉冲串信号，通过红外发射管发射。本设计采用Atmega8作为红外发射编码和接收解码芯片。-Infrared remote control has been widely used in various types of household electrical appliances, it' s there to provide the users a lot of convenience. Infrared remote control system in general by the infrared emission devices and infrared devices to accept the composition of two major parts. Infrared emission circuit device can be by keyboard, infrared encoder chip, power and infrared emission circuit. By the infrared receiver infrared receiver circuit equipment, infrared decoder chip, power supply and application circuit. Usually better in order to signal the sending end of the transmission to binary base-band signal for pulse modulation, through the launch tube infrared emission. The design uses infrared emission Atmega8 as encoding and decoding chip receiver. Platform: |
Size: 476160 |
Author:金静 |
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Description: • Become familiar with WAN terminology.
• Learn about different types of WAN connections.
• Become familiar with different types of WAN equipment.
Introduction to WAN Technologies
This chapter introduces the various protocols and technologies used in wide-area network (WAN)
environments. Topics summarized here include point-to-point links, circuit switching, packet switching,
virtual circuits, dialup services, and WAN devices. Chapters in Part III, “WAN Protocols,” address
specific technologies in more detail-• Become familiar with WAN terminology.
• Learn about different types of WAN connections.
• Become familiar with different types of WAN equipment.
Introduction to WAN Technologies
This chapter introduces the various protocols and technologies used in wide-area network (WAN)
environments. Topics summarized here include point-to-point links, circuit switching, packet switching,
virtual circuits, dialup services, and WAN devices. Chapters in Part III, “WAN Protocols,” address
specific technologies in more detail Platform: |
Size: 136192 |
Author:Pankaj Joshi |
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Description: 介绍了ADF4360-8芯片的功能、内部结构、引脚排列及典型的应用电路及其评估板。ADF4360-8是集成的整数N合成器和压控振荡器（VCO）。芯片内嵌一个基准输入部分、N计数器和R计数器、相位频率检波器（PFD）和充电泵、多路复用器和锁定检波器、输入移位寄存器、控制锁存器、N计数锁存器、R计数锁存器。它可用于产生系统时钟，作为测试设备，用于无线局域网（LAN），作为闭路电视（CATV）设备。ADF4360-8EB1评估板可以让用户评估ADF4360-8频率合成器PLL的性能。
-Introduced the ADF4360-8-chip features, the internal structure of a typical pin and the application circuit and its evaluation board. ADF4360-8 is an integrated integer N synthesizer and voltage controlled oscillator (VCO). Input chip embedded part of a benchmark, N and R counters counter, phase frequency detector (PFD) and charge pump, and lock multiplexer detector, input shift register, control latch, N counter latch , R latch count. It can be used to generate system clock, as a test equipment for wireless local area network (LAN), as a closed-circuit television (CATV) equipment. ADF4360-8EB1 evaluation board allows users to assess the ADF4360-8 Synthesizer PLL performance. Platform: |
Size: 400384 |
Author:庄乾章 |
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Description: 印制板是电子产品和设备必不可少的一部分，本文主要介绍了如何进行排版设计。-The printed circuit board is an essential part of electronic products and equipment, this article introduces how to layout design. Platform: |
Size: 8406016 |
Author:王琳 |
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Description: M2577被广泛应用在CRT显示器、液晶显示器、电视机、电源适配器、自动控制设备电源、待机电源等电路中。其输出固定电压的应用电路或者输出可调电压的应用电路。lm2577大电流控制，适合多种电压调节电路，-M2577 is widely used in CRT monitors, LCD monitors, televisions, power adapter, power supply automatic control equipment, standby power supply circuits. Its application circuit or fixed output voltage adjustable output voltage application circuit. lm2577 large current control for a variety of voltage regulator circuit, Platform: |
Size: 40960 |
Author:linhuan |
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