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Electronics and Computer

Written By Easy Life on Sunday, June 9, 2013 | 6/09/2013 06:40:00 PM

               

                     Electronics and Computer

No.QuestionAnswer
01The unit of frequency isHertz
02The unit of resistance isOhm
03The device which makes or breaks a circuit isSwitch
04The path of an electric current is known as aCircuit
05Device which opposes the flow of electric current is known asResistor
06Arc Lamp was invented byC.F.Brush
07Television was invented byJ.L.Baird
08Transistor was invented byJ.Bardeen,W.Shockley and W.Brattain
09The unit of wavelength of light isAngstrom
10A device which converts light into electricity is known asPhoto cell
11Hertz was the first to discoverRadio waves
12Marconi inventedRadio
13In 1901,Marconi beamed a signal from Cornwall in England toNewfoundland
14Thomas Edison was anAmerican inventor
15A glass tube with two electrodes is called aDiode
16Lee de Forest was anAmerican scientist
17Lee de Forest discovered theTriode
18Radio and television transmit signals usingElectromagnetic waves
19To turn pictures into electrical signals,television Cameras rely onPhoto-electric effect
20Transistor was invented in the year1948
21The first electronic components invented were theThermionic valves
22Microchip was invented in the year1958
23Microchip was invented byJack Kilby
24The microchip invented first was also the firstIntegrated circuit
25Silicon and germanium are ideal examples ofSemi conductors
26LED stands forLight Emitting Diode
27The first computer was invented in the year1834
28The first computer was invented byCharles Babbage
29The first computer invented was calledAnalytical Engine
30In the present day electronic machines,computers function asArtificial brains
31CAD meansComputer Aided Design
32CPU stands forCentral Processing Unit
33RAM stands forRandom Access Memory
34J.J. Thomson was aBritish physicist
35In 1897,J.J.Thomson discoveredElectrons
36A device used for increasing the strength of electric signal is calledAmplifier
37The height of a wave is calledAmplitude
38An electron carries a chargeNegative
39In a transistor,a base is theFilling in the semiconductor sandwich
40The tube behind the screen in TVs and most computers is calledCathode Ray Tube
41The force which makes an electric current is calledElectromotive Force
42Device used for measuring small amounts of electric current is calledGalvanometer
43Sound too low to be heard by humans is calledInfrasound
44VDU stands forVisual Display Unit
45One kilobyte is approximately1000 bytes
46DOS stands forDisk Operating System
47WORD STAR is a popularWord processing programme
48WORD STAR was developed byMicro pro Company
49PC stands forPersonal Computer
50ALU stands forArithmetic Logic Unit
51The VDU and Keyboard together form aTERMINAL
52The speed of the dot matrix printers is measured by CPS which stands forcharacters per second
53The speed of the line printers is measured by LPM which stands forLines per second
54DBMS stands forDatabase Management System
55IBM is a famous computer company.IBM stands forInternational Business Machines Corporation
56ROM stands forRead Only Memory
57The actual machine of the computer is commonly known asHardware
58The programs run on the computer are commonly known asSoftware
59All the output which is printed on paper is calledHard Copy
60The number of pixels on a computer screen determines a screes'sResolution
61A processor's speed is measured inMegahertz
62A software that assists the computer in performing instructions,is called assystem software
63CAM stands forComputer Aided Manufacturing
64DPI stands forDots per Inch
65DTP stands forDesk Top Publishing
66EPROM stands forerasable and Programmable Read only Memory
67A magnetic storage disk made out of a thin piece of plastic is calledFloppy Disk
68A pictorial representation of the step by step sequence for solving a problem is known as aFlow Chart
69A measure of storage capacity equal to one thousand megabytes is oneGigabyte
70A variable whose value is accessible throughout the program is calledGlobal Variable
71A huge,worldwide network of computers that communicate with each other,allowing global communications between users is known popularly known asInternet
72KB stands forKilobyte
73LAN stands forLocal Area Network
74A printer which uses light to transfer the image to paper is theLaser Printer
75Memory which retains all its contents even after the power is turned off is known asNon-Volatile Memory
76The result that is generated by the computer after processing the information provided to it is known asOutput
77Electronic mail is more popularly known asE-Mail
78PILOT stands forProgrammed Inquiry Learning Or Teaching
79PILOT was developed byDoug Engelbardt
80IQL stands forInteractive Query Language
81LOGO was developed byDr.seymour Papert
82CAL stands forComputer Assisted Learning
83APT stands forAutomatically Programmed Tooling
84`C'language was invented byDennis M.Ritchie
85Modula-2 was developed byNiklaus Wirth
86Terminals that have their own memory are calledSmart terminals
87The memory that needs electric power to sustain its contents is known asVolatile Memory
88MOS stands forMetallic Oxide Semiconductors
89Dvorak key board was designed byAugust Dvorak
90A simple device which functions as a simpler alternative to the keyboard is theMouse
91Automatic drawing input device is calledScanner
92In the second generation computers,magnetic cores were used asMain Memory Devices
93LCD stands forLiquid Crystal Display
94RADAR stands forRadio Detection and Ranging
95RADAR works on the principle ofEcho
96software-in-Hardware modules are calledFirmware
97A device by which any microcomputer can use ordinary television set for producing output is calledRF modulator
98EDSAC stands forElectronic Delayed Storage Automatic Computer
99EDVAC stands forElectronic Discrete Variable Automatic Computer
100EDSAC was developed in the year1949
101EDVAC was developed in the year1952
102ENIAC stands forElectronic Numerical Integrator and Calculator
103The most successful computing device in the ancient time wasAbacus
104Use of some mechanism for the operation of a machine is known asAutomation
105Radar contact with the moon was first made in1945
106Radar contact with Venus was first made in1961
107A system in which information is displayed on a television screen is known asVideo Text System
108A modern means of communication in which the information is stored in a computer at a TV station is known asTeletext
109Global communication became possible by usingSatellites
110Morse code was invented bySamuel Morse
111The code used in a teleprinter is theBaudot Code
112Teleprinter exchange is popularly known asTelex
113A device which converts sound waves into electrical waves is calledMicrophone
114AVC stands forAutomatic Volume Control
115The device used to measure wavelengths of radio waves isWavemeter
116A hollow metallic tube used in place of wire in electric circuits carrying high frequency currents is calledWaveguide
117An instrument used to measure the intensity of radiations is theRadiometer
118An instrument used to measure electrical voltage is theVoltmeter
119VTVM stands forVacuum Tube Volt Meter
120A circuit which maintains a constant voltage is calledVoltage Stabilizer
121SCR stands forSilicon Controlled Rectifier
122A device used to increase or decrease electric voltageis called aTransformer
123A magnetic tape that records both audio and video signals is called aVideo Tape
124The first electronic calculator was manufactured in 1963 byBell Punch Company,USA
125MASER stands forMicrowave Amplification by stimulated Emission of Radiation
126A computer which can handle a large volume of numbers is called aNumber cruncher
127POST stands forPower on Self Test
128POST is a test carried out just after the computer has beenSwitched on
129An index of the files stored on a disk is calledDirectory
130CP/M stands forControl program for Microcomputers
131CP/M was developed bydigital Research Inc.,USA
132MVS stands forMultiple Virtual Storage Operating System
133MVS is used inMainframe computers
134The process of starting a computer is calledBooting
135A group of four binary digits is called aNIBBLE
136BPI stands forBit per Inch
137A smart card is amultifunctional microprocessor
138LIPS stands forLogical Inferences Per Second
139A computerized machine is normally called aRobot
140A robot is a machine directed by aComputer
141A robot which resembles a human being is called anAndroid
142PL/1 stands forProgramme Language-1
143The language PL/1 has combined features ofCOBOL and FORTRAN
144BASIC stands forBegineers All Purpose Symbolic Instruction Code
145COBOL stands forCommon Busines Oriented Language
146ALGOL stands forAlgorithmic Language
147ALGOL was developed in the early 1960s inEurope
148COBOL was first introduced in the year1961
149FORTRAN stands forFormula Translation
150FORTRAN was developed and introduced by IBM in the year1957
151PL/1 was introduced in the 1960s byIBM
152COMAL stands forCommon Algorithmic Language
153BASIC was developed byJohn Kemeny and Thomas Kurtz
154SNOBOL stands forString Oriented Symbolic Language
155SNOBOL was developed in1962
156LISP stands forList Processing Language
157LISP was developed byJohn McCarthy
158Loud speaker was invented byRice Kellogg
159PROM stands forProgrammable Read Only Memory
160Two types of RAM chips areDynamic,static
161Data is fed into the computer by first converting it intoBinary codes
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