摘要

隨著計(jì)算機(jī)技術(shù)的發(fā)展和電路仿真軟件的不斷出現(xiàn)，電路仿真技術(shù)愈來愈受到人們的重視，很多學(xué)校已將電路仿真技術(shù)作為教學(xué)內(nèi)容。Multisim10.0是美國國家儀器公司( NI公司)推出的最新電子電路仿真軟件版本, 是一個(gè)原理電路設(shè)計(jì)、電路功能測試的虛擬仿真軟件。

  本論文首先給出了電路系統(tǒng)綜合設(shè)計(jì)的基礎(chǔ)知識，包括電路系統(tǒng)綜合設(shè)計(jì)的一般方法、設(shè)計(jì)步驟以及系統(tǒng)綜合設(shè)計(jì)應(yīng)注意的問題；接著以搶答器系統(tǒng)為例，通過分析多路搶答系統(tǒng)的設(shè)計(jì)要求，按照綜合系統(tǒng)設(shè)計(jì)的一般方法和步驟，先進(jìn)行系統(tǒng)的方案設(shè)計(jì)，再進(jìn)行原理電路的設(shè)計(jì)，包括總體電路設(shè)計(jì)和單元電路設(shè)計(jì)，給出了總體電路結(jié)構(gòu)圖和單元電路圖；最后用 Multisim對所設(shè)計(jì)的電路進(jìn)行仿真分析，給出了復(fù)雜電路系統(tǒng)仿真分析的一般方法和步驟。

其次對搶答器系統(tǒng)的Multisim仿真進(jìn)行探討，研究了Multisim系統(tǒng)的特點(diǎn)、優(yōu)勢以及Multisim使用的基本原理，在系統(tǒng)設(shè)計(jì)與實(shí)現(xiàn)中，重點(diǎn)對Multisim在多路搶答系統(tǒng)的設(shè)計(jì)中的應(yīng)用做了詳細(xì)的分析，同時(shí)對Multisim在電路仿真設(shè)計(jì)中的功能進(jìn)行了介紹。

最后，對系統(tǒng)的性能進(jìn)行了可行性分析論證。

關(guān)鍵詞：Multisim，仿真，搶答器

 

Abstract

With the development of computer technology and circuit simulation software, the continual emergence of circuit simulation technology more and more attention, many schools already have a circuit simulation technology as a teaching content. Multisim10.0 is the launch of the latest National Instruments (NI) electronic circuit simulation software version Is a schematic circuit design, circuit simulation software for functional testing.

This chapter gives the first integrated circuit design system, including integrated circuit design system, the general method of design steps, as well as comprehensive design system should pay attention to the problem; then to answer devices management systems for example, by analyzing the traffic management system design requirements, integrated system design in accordance with the general methods and steps to carry out system design, and then carry out the principle of circuit design, including the overall road design, including the overall circuit design and circuit design, given the overall circuit structure and circuit unit; final Multisim for the use of circuit design simulation, given the complexity of the analysis of circuit simulation methods and procedures in general. 

Secondly, the answer devices management system to explore Multisim positioning technology to study the characteristics of the system Multisim, Multisim advantages, as well as the use of the basic principles of system design and implementation, the focus of Multisim in the traffic management system design in detail analysis, at the same time Multisim circuit simulation in the design of the functions are introduced. 

Finally, the performance of the system analysis carried out a feasibility demonstration. 

Key words: Multisim，Simulation , Answer Devices System

 

目錄

摘要 I

ABSTRACT II

1  引言 1

1.1  研究背景 1

1.2  研究多路搶答器的目的意義 1

2  總體設(shè)計(jì) 2

2.1  MULTISIM簡介 2

2.1.1  Multisim軟件的起源 2

2.1.2  Multisim10.0軟件介紹 2

2.1.3  Multisim 10.0 在電子實(shí)驗(yàn)教學(xué)中的應(yīng)用 3

2.2  多路搶答器 3

2.2.1  多路搶答器研究的設(shè)計(jì)要求 3

2.2.2  多路搶答器的工作原理框圖 3

2.2.3  基于Multisim10.0的多路搶答器的設(shè)計(jì)與仿真 4

2.3  多路搶答器的實(shí)現(xiàn) 5

2.3.1  擬采用的研究方法和技術(shù)路線 5

2.3.2  系統(tǒng)綜合設(shè)計(jì)應(yīng)注意的問題 5

3  搶答器搶答模塊的設(shè)計(jì)與實(shí)現(xiàn) 7

3.1  電路芯片 7

3.1.1  74LS175芯片功能簡介 7

3.1.2  74LS192芯片功能簡介 8

3.1.3  555芯片簡介 9

3.2  搶答模塊的仿真 10

4  倒計(jì)時(shí)模塊的設(shè)計(jì)與仿真 12

4.1  倒計(jì)時(shí)模塊的設(shè)計(jì) 12

4.1.1  74LS192組成的倒計(jì)時(shí)部分 12

4.1.2  555觸發(fā)器組成的脈沖觸發(fā)器 12

4.2  倒計(jì)時(shí)模塊的仿真 13

5  電路總圖 14

6  設(shè)計(jì)總結(jié)與展望 16

6.1  總結(jié) 16

6.2  展望 17

參考文獻(xiàn) 19

致謝 20

附錄  元件清單 21