【云南開放大學】計算機專業(yè)英語(20秋)形考作業(yè)2-參考答案

1、云南開放大學-計算機專業(yè)英語（20秋）形考作業(yè)2試卷總分:100 得分:100一、單選題 (共 5 道試題,共 50 分)1.Hard disk drives , floppy disk drives and _drives serve as both input and output.A.Optical magneticB.keyboardC.mouseD.optical disc提問：認真復習云南開放課程知識，并回答上述試題標準正確答案是:D2.Some computers are designed to_ their work across several CPUS in a multi

2、processing configuration.A.distributeB.distributedC.distributingD.distributes提問：認真復習云南開放課程知識，并回答上述試題標準正確答案是:A3.A general purpose computer has four main components: the arithmetic logic unit (ALU),_, the memory, and the input and output devices (collectively termed I/O).A.the control unitB.mouseC.dis

3、playD.disc提問：認真復習云南開放課程知識，并回答上述試題標準正確答案是:A4.In almost all modern computers, each memory cell is set up to store binary numbers in groups of_ (called a byte).Each byte is able to represent 256 different numbers (28 = 256); either from 0 to 255 or -128 to +127.A.One bitB.two bitsC.eight bitsD.eight bi

4、t提問：認真復習云南開放課程知識，并回答上述試題標準正確答案是:C5.One means by which this is done is with a special signal called an _ which can periodically cause the computer to stop executing instructions where it was and do something else insteaD.A.pauseB.stopC.interruptD.exit提問：認真復習云南開放課程知識，并回答上述試題標準正確答案是:C二、閱讀理解 (共 1 道試題,共

5、50 分)10.A general purpose computer has four main components: the arithmetic logic unit (ALU), the control unit, the memory, and the input and output devices （collectively termed I/O). These parts are interconnected by buses, often made of groups of wires.Inside each of these parts are trillions of s

6、mall electrical circuits which can be turned off or on by means of an electronic switch. Each circuit represents a bit (binary digit) of information so that when the circuit is on it represents a “1”, and when off it represents a “0” (in positive logic representation). The Circuits are arranged in l

7、ogic gates so that one or more of the circuits may control the state of one or more of the other circuits.The control unit, ALU, registers, and basic I/O (and often other hardware closely linked with these) are collectively known as a central processing unit (CPU). Early CPUs were composed of many s

8、eparate components but since the mid-1970s CUPs have typically been constructed on a single integrated circuit called a microprocessor.The control unit (often called a control system or central controller) manages the computers various components; it reads and interprets, (decodes) the program instr

9、uctions, transforming them into a series of control signals which activate other parts of the computer. Control systems in advanced computers may change the order of some instructions so as to improve performance.(1).A general purpose computer has four main components: the arithmetic logic unit, the

10、 control unit, _, and the input and output devices.A.mouseB.the memoryC.displayD.disc提問：認真復習云南開放課程知識，并回答上述試題標準正確答案是:B(2).If the circuit is on, it represents a _(in positive logic representation).A.1B.0C.onD.off提問：認真復習云南開放課程知識，并回答上述試題標準正確答案是:A(3).The central processing unit is composed of _ components.A.threeB.sixC.fourD.five提問：認真復習云南開放課程知識，并回答上述試題標準正確答案是:C(4).the control unit can not _.A.read the program instructions.B.transform the program instructions into a series of control signals.C.print docu-ments.D.interpret the program ins