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电工知识问答题库

电工知识问答题库
1.电是什么?
答:有负荷存在和电荷变化的现象。电是一种和重要的能源。
2.什么叫电场?
答:带电体形成的场,能传递带电体之间的相互作用。
3.什么叫电
2024-05-04 22:00:02 下载 7 查看 9,534
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SDH传输原理PPT介绍

1、SDH概述——建立SDH基本概念 SDH是什么? 为什么会产生SDH体制? SDH体制的优缺点。
2025-01-01 00:10:01 下载 4 查看 7,554
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XAPP328-使用CPLD设计MP3播放器

MP3 is a digital compression technique based on MPEG Layer 3 which stores music ina lot less space than
2013-11-23 05:04:01 下载 62 查看 1,063
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Decoding most of the infrared signals can be easily handled by PIC16C5X microcontrollers. This appl

The hardware costs of each approach will be less than two dollars.
2015-05-24 20:08:02 下载 85 查看 1,093
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小面积和大面积光电二极管的低噪声放大器

high capacitance(30pF to 3000pF) and smaller area photodiodes withrelatively low capacitance (10pF or less
2013-10-28 08:00:01 下载 118 查看 1,101
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Learning Kernel Classifiers: Theory and Algorithms, Introduction This chapter introduces the general

Bearing in mind that in the early days the most powerful computers had much less computational power
2015-10-20 10:33:01 下载 69 查看 1,087
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A major goal of this book is to show to make devices that are inherently reliable by design. While a

of quality problems can be addressed in the design phase with relatively little effort, and with far less
2016-07-30 10:19:02 下载 72 查看 1,149
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Space-Time+Processing+for+Wireless+Communications

In this thesis several asp ects of space-time pro cessing and equalization for wire-
less communications
2020-06-01 07:34:45 下载 1 查看 78
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电路中各种接地方法介绍

在低频电路中,布线和元件间的电感并不是什么大问题,然而接地形成的环路的干扰影响很大,因此,常以一点作为接地点.
2013-10-13 13:52:01 下载 146 查看 1,088
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XRP7714 Demo板电路测试方法

概述
近期有客户反映在使用XRP7714过程中出现芯片不正常运行的情况:4路无输出电压、输出电源过低等,这是什么原因呢?
2014-01-20 03:48:01 下载 108 查看 1,173
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数据库与sql学习手册

这个文件柜是一个存放数据的物理位置,不管数据是什么,也不管数据是如何组织的。

2015-09-09 18:20:29 下载 1 查看 41
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《操作系统概念第六版翻译版》

第一部分概要解释了操作系统是什么、做什么、是怎样设计与构造的,也解释了操作系统概念是如何发展起来的,操作系统的公共特性是什么。第二部分进程管理描述了作为现代操作系统核心的进程以及并发的概念。
2013-06-08 03:20:01 下载 128 查看 1,143
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《操作系统概念第六版翻译版》

第一部分概要解释了操作系统是什么、做什么、是怎样设计与构造的,也解释了操作系统概念是如何发展起来的,操作系统的公共特性是什么。第二部分进程管理描述了作为现代操作系统核心的进程以及并发的概念。
2023-05-09 16:40:09 下载 10 查看 9,473
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) Compression using huffman code -with a number of bits k per code word -provide huffma

prefix code that expresses the most common characters using shorter strings of bits than those used for less
2017-05-30 20:28:02 下载 109 查看 1,068
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硬件设计新手入门宝典之第二部

学了模电数电基本知识后,这些知识在实际硬件产品设计中是如何应用,实际硬件产品电路又是什么样的呢?
2022-11-10 14:30:02 下载 8 查看 432
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用AVR单片机设计的MP3播放器 功能: MP3 Player IDE ATA interface FAT 32 with long file name support USB

Remote Control Back light graphic LCD worked with only 2x AA batteries In sleep mode sink less
2016-07-02 20:32:02 下载 32 查看 1,125
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The literature of cryptography has a curious history. Secrecy, of course, has always played a centra

central role, but until the First World War, important developments appeared in print in a more or less
2016-12-08 00:39:02 下载 34 查看 1,067
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Multihop+Wireless+Networks

Among various types of wire-
less networks, multihop wireless networks (MWNs) have been attracting
2020-05-31 06:28:14 查看 55
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RF Imperfections

shortly thereafter,
commercialised by, amongst others, Marconi in one of the first wire-
less
2020-06-01 03:05:40 下载 1 查看 59
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Wi-Fi(TM), Bluetooth(TM), Zigbee(TM) and WiMax(TM)

We talk about wireless local area networks (WLANs), wire-
less personal area networks (WPANs),
2020-06-01 18:04:20 下载 1 查看 73
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