{"id":7592,"date":"2012-12-23T02:49:32","date_gmt":"2012-12-23T02:49:32","guid":{"rendered":"http:\/\/www.generalknowledgetoday.com\/?p=7592"},"modified":"2012-12-23T02:49:32","modified_gmt":"2012-12-23T02:49:32","slug":"science-gk-inventionsinventorsinstrumentsunits","status":"publish","type":"post","link":"https:\/\/generalknowledgetoday.com\/?p=7592","title":{"rendered":"Science GK.Inventions,Inventors,Instruments,Units"},"content":{"rendered":"\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
01<\/td>\nThe unit of frequency is<\/td>\nHertz<\/td>\n<\/tr>\n
02<\/td>\nThe unit of resistance is<\/td>\nOhm<\/td>\n<\/tr>\n
03<\/td>\nThe device which makes or breaks a circuit is<\/td>\nSwitch<\/td>\n<\/tr>\n
04<\/td>\nThe path of an electric current is known as a<\/td>\nCircuit<\/td>\n<\/tr>\n
05<\/td>\nDevice which opposes the flow of electric current is known as<\/td>\nResistor<\/td>\n<\/tr>\n
06<\/td>\nArc Lamp was invented by<\/td>\nC.F.Brush<\/td>\n<\/tr>\n
07<\/td>\nTelevision was invented by<\/td>\nJ.L.Baird<\/td>\n<\/tr>\n
08<\/td>\nTransistor was invented by<\/td>\nJ.Bardeen,W.Shockley and W.Brattain<\/td>\n<\/tr>\n
09<\/td>\nThe unit of wavelength of light is<\/td>\nAngstrom<\/td>\n<\/tr>\n
10<\/td>\nA device which converts light into electricity is known as<\/td>\nPhoto cell<\/td>\n<\/tr>\n
11<\/td>\nHertz was the first to discover<\/td>\nRadio waves<\/td>\n<\/tr>\n
12<\/td>\nMarconi invented<\/td>\nRadio<\/td>\n<\/tr>\n
13<\/td>\nIn 1901,Marconi beamed a signal from Cornwall in England to<\/td>\nNewfoundland<\/td>\n<\/tr>\n
14<\/td>\nThomas Edison was an<\/td>\nAmerican inventor<\/td>\n<\/tr>\n
15<\/td>\nA glass tube with two electrodes is called a<\/td>\nDiode<\/td>\n<\/tr>\n
16<\/td>\nLee de Forest was an<\/td>\nAmerican scientist<\/td>\n<\/tr>\n
17<\/td>\nLee de Forest discovered the<\/td>\nTriode<\/td>\n<\/tr>\n
18<\/td>\nRadio and television transmit signals using<\/td>\nElectromagnetic waves<\/td>\n<\/tr>\n
19<\/td>\nTo turn pictures into electrical signals,television Cameras rely on<\/td>\nPhoto-electric effect<\/td>\n<\/tr>\n
20<\/td>\nTransistor was invented in the year<\/td>\n1948<\/td>\n<\/tr>\n
21<\/td>\nThe first electronic components invented were the<\/td>\nThermionic valves<\/td>\n<\/tr>\n
22<\/td>\nMicrochip was invented in the year<\/td>\n1958<\/td>\n<\/tr>\n
23<\/td>\nMicrochip was invented by<\/td>\nJack Kilby<\/td>\n<\/tr>\n
24<\/td>\nThe microchip invented first was also the first<\/td>\nIntegrated circuit<\/td>\n<\/tr>\n
25<\/td>\nSilicon and germanium are ideal examples of<\/td>\nSemi conductors<\/td>\n<\/tr>\n
26<\/td>\nLED stands for<\/td>\nLight Emitting Diode<\/td>\n<\/tr>\n
27<\/td>\nThe first computer was invented in the year<\/td>\n1834<\/td>\n<\/tr>\n
28<\/td>\nThe first computer was invented by<\/td>\nCharles Babbage<\/td>\n<\/tr>\n
29<\/td>\nThe first computer invented was called<\/td>\nAnalytical Engine<\/td>\n<\/tr>\n
30<\/td>\nIn the present day electronic machines,computers function as<\/td>\nArtificial brains<\/td>\n<\/tr>\n
31<\/td>\nCAD means<\/td>\nComputer Aided Design<\/td>\n<\/tr>\n
32<\/td>\nCPU stands for<\/td>\nCentral Processing Unit<\/td>\n<\/tr>\n
33<\/td>\nRAM stands for<\/td>\nRandom Access Memory<\/td>\n<\/tr>\n
34<\/td>\nJ.J. Thomson was a<\/td>\nBritish physicist<\/td>\n<\/tr>\n
35<\/td>\nIn 1897,J.J.Thomson discovered<\/td>\nElectrons<\/td>\n<\/tr>\n
36<\/td>\nA device used for increasing the strength of electric signal is called<\/td>\nAmplifier<\/td>\n<\/tr>\n
37<\/td>\nThe height of a wave is called<\/td>\nAmplitude<\/td>\n<\/tr>\n
38<\/td>\nAn electron carries a charge<\/td>\nNegative<\/td>\n<\/tr>\n
39<\/td>\nIn a transistor,a base is the<\/td>\nFilling in the semiconductor sandwich<\/td>\n<\/tr>\n
40<\/td>\nThe tube behind the screen in TVs and most computers is called<\/td>\nCathode Ray Tube<\/td>\n<\/tr>\n
41<\/td>\nThe force which makes an electric current is called<\/td>\nElectromotive Force<\/td>\n<\/tr>\n
42<\/td>\nDevice used for measuring small amounts of electric current is called<\/td>\nGalvanometer<\/td>\n<\/tr>\n
43<\/td>\nSound too low to be heard by humans is called<\/td>\nInfrasound<\/td>\n<\/tr>\n
44<\/td>\nVDU stands for<\/td>\nVisual Display Unit<\/td>\n<\/tr>\n
45<\/td>\nOne kilobyte is approximately<\/td>\n1000 bytes<\/td>\n<\/tr>\n
46<\/td>\nDOS stands for<\/td>\nDisk Operating System<\/td>\n<\/tr>\n
47<\/td>\nWORD STAR is a popular<\/td>\nWord processing programme<\/td>\n<\/tr>\n
48<\/td>\nWORD STAR was developed by<\/td>\nMicro pro Company<\/td>\n<\/tr>\n
49<\/td>\nPC stands for<\/td>\nPersonal Computer<\/td>\n<\/tr>\n
50<\/td>\nALU stands for<\/td>\nArithmetic Logic Unit<\/td>\n<\/tr>\n
51<\/td>\nThe VDU and Keyboard together form a<\/td>\nTERMINAL<\/td>\n<\/tr>\n
52<\/td>\nThe speed of the dot matrix printers is measured by CPS which stands for<\/td>\ncharacters per second<\/td>\n<\/tr>\n
53<\/td>\nThe speed of the line printers is measured by LPM which stands for<\/td>\nLines per second<\/td>\n<\/tr>\n
54<\/td>\nDBMS stands for<\/td>\nDatabase Management System<\/td>\n<\/tr>\n
55<\/td>\nIBM is a famous computer company.IBM stands for<\/td>\nInternational Business Machines Corporation<\/td>\n<\/tr>\n
56<\/td>\nROM stands for<\/td>\nRead Only Memory<\/td>\n<\/tr>\n
57<\/td>\nThe actual machine of the computer is commonly known as<\/td>\nHardware<\/td>\n<\/tr>\n
58<\/td>\nThe programs run on the computer are commonly known as<\/td>\nSoftware<\/td>\n<\/tr>\n
59<\/td>\nAll the output which is printed on paper is called<\/td>\nHard Copy<\/td>\n<\/tr>\n
60<\/td>\nThe number of pixels on a computer screen determines a screes’s<\/td>\nResolution<\/td>\n<\/tr>\n
61<\/td>\nA processor’s speed is measured in<\/td>\nMegahertz<\/td>\n<\/tr>\n
62<\/td>\nA software that assists the computer in performing instructions,is called as<\/td>\nsystem software<\/td>\n<\/tr>\n
63<\/td>\nCAM stands for<\/td>\nComputer Aided Manufacturing<\/td>\n<\/tr>\n
64<\/td>\nDPI stands for<\/td>\nDots per Inch<\/td>\n<\/tr>\n
65<\/td>\nDTP stands for<\/td>\nDesk Top Publishing<\/td>\n<\/tr>\n
66<\/td>\nEPROM stands for<\/td>\nerasable and Programmable Read only Memory<\/td>\n<\/tr>\n
67<\/td>\nA magnetic storage disk made out of a thin piece of plastic is called<\/td>\nFloppy Disk<\/td>\n<\/tr>\n
68<\/td>\nA pictorial representation of the step by step sequence for solving a problem is known as a<\/td>\nFlow Chart<\/td>\n<\/tr>\n
69<\/td>\nA measure of storage capacity equal to one thousand megabytes is one<\/td>\nGigabyte<\/td>\n<\/tr>\n
70<\/td>\nA variable whose value is accessible throughout the program is called<\/td>\nGlobal Variable<\/td>\n<\/tr>\n
71<\/td>\nA huge,worldwide network of computers that communicate with each other,allowing global communications between users is known popularly known as<\/td>\nInternet<\/td>\n<\/tr>\n
72<\/td>\nKB stands for<\/td>\nKilobyte<\/td>\n<\/tr>\n
73<\/td>\nLAN stands for<\/td>\nLocal Area Network<\/td>\n<\/tr>\n
74<\/td>\nA printer which uses light to transfer the image to paper is the<\/td>\nLaser Printer<\/td>\n<\/tr>\n
75<\/td>\nMemory which retains all its contents even after the power is turned off is known as<\/td>\nNon-Volatile Memory<\/td>\n<\/tr>\n
76<\/td>\nThe result that is generated by the computer after processing the information provided to it is known as<\/td>\nOutput<\/td>\n<\/tr>\n
77<\/td>\nElectronic mail is more popularly known as<\/td>\nE-Mail<\/td>\n<\/tr>\n
78<\/td>\nPILOT stands for<\/td>\nProgrammed Inquiry Learning Or Teaching<\/td>\n<\/tr>\n
79<\/td>\nPILOT was developed by<\/td>\nDoug Engelbardt<\/td>\n<\/tr>\n
80<\/td>\nIQL stands for<\/td>\nInteractive Query Language<\/td>\n<\/tr>\n
81<\/td>\nLOGO was developed by<\/td>\nDr.seymour Papert<\/td>\n<\/tr>\n
82<\/td>\nCAL stands for<\/td>\nComputer Assisted Learning<\/td>\n<\/tr>\n
83<\/td>\nAPT stands for<\/td>\nAutomatically Programmed Tooling<\/td>\n<\/tr>\n
84<\/td>\n`C’language was invented by<\/td>\nDennis M.Ritchie<\/td>\n<\/tr>\n
85<\/td>\nModula-2 was developed by<\/td>\nNiklaus Wirth<\/td>\n<\/tr>\n
86<\/td>\nTerminals that have their own memory are called<\/td>\nSmart terminals<\/td>\n<\/tr>\n
87<\/td>\nThe memory that needs electric power to sustain its contents is known as<\/td>\nVolatile Memory<\/td>\n<\/tr>\n
88<\/td>\nMOS stands for<\/td>\nMetallic Oxide Semiconductors<\/td>\n<\/tr>\n
89<\/td>\nDvorak key board was designed by<\/td>\nAugust Dvorak<\/td>\n<\/tr>\n
90<\/td>\nA simple device which functions as a simpler alternative to the keyboard is the<\/td>\nMouse<\/td>\n<\/tr>\n
91<\/td>\nAutomatic drawing input device is called<\/td>\nScanner<\/td>\n<\/tr>\n
92<\/td>\nIn the second generation computers,magnetic cores were used as<\/td>\nMain Memory Devices<\/td>\n<\/tr>\n
93<\/td>\nLCD stands for<\/td>\nLiquid Crystal Display<\/td>\n<\/tr>\n
94<\/td>\nRADAR stands for<\/td>\nRadio Detection and Ranging<\/td>\n<\/tr>\n
95<\/td>\nRADAR works on the principle of<\/td>\nEcho<\/td>\n<\/tr>\n
96<\/td>\nsoftware-in-Hardware modules are called<\/td>\nFirmware<\/td>\n<\/tr>\n
97<\/td>\nA device by which any microcomputer can use ordinary television set for producing output is called<\/td>\nRF modulator<\/td>\n<\/tr>\n
98<\/td>\nEDSAC stands for<\/td>\nElectronic Delayed Storage Automatic Computer<\/td>\n<\/tr>\n
99<\/td>\nEDVAC stands for<\/td>\nElectronic Discrete Variable Automatic Computer<\/td>\n<\/tr>\n
100<\/td>\nEDSAC was developed in the year<\/td>\n1949<\/td>\n<\/tr>\n
101<\/td>\nEDVAC was developed in the year<\/td>\n1952<\/td>\n<\/tr>\n
102<\/td>\nENIAC stands for<\/td>\nElectronic Numerical Integrator and Calculator<\/td>\n<\/tr>\n
103<\/td>\nThe most successful computing device in the ancient time was<\/td>\nAbacus<\/td>\n<\/tr>\n
104<\/td>\nUse of some mechanism for the operation of a machine is known as<\/td>\nAutomation<\/td>\n<\/tr>\n
105<\/td>\nRadar contact with the moon was first made in<\/td>\n1945<\/td>\n<\/tr>\n
106<\/td>\nRadar contact with Venus was first made in<\/td>\n1961<\/td>\n<\/tr>\n
107<\/td>\nA system in which information is displayed on a television screen is known as<\/td>\nVideo Text System<\/td>\n<\/tr>\n
108<\/td>\nA modern means of communication in which the information is stored in a computer at a TV station is known as<\/td>\nTeletext<\/td>\n<\/tr>\n
109<\/td>\nGlobal communication became possible by using<\/td>\nSatellites<\/td>\n<\/tr>\n
110<\/td>\nMorse code was invented by<\/td>\nSamuel Morse<\/td>\n<\/tr>\n
111<\/td>\nThe code used in a teleprinter is the<\/td>\nBaudot Code<\/td>\n<\/tr>\n
112<\/td>\nTeleprinter exchange is popularly known as<\/td>\nTelex<\/td>\n<\/tr>\n
113<\/td>\nA device which converts sound waves into electrical waves is called<\/td>\nMicrophone<\/td>\n<\/tr>\n
114<\/td>\nAVC stands for<\/td>\nAutomatic Volume Control<\/td>\n<\/tr>\n
115<\/td>\nThe device used to measure wavelengths of radio waves is<\/td>\nWavemeter<\/td>\n<\/tr>\n
116<\/td>\nA hollow metallic tube used in place of wire in electric circuits carrying high frequency currents is called<\/td>\nWaveguide<\/td>\n<\/tr>\n
117<\/td>\nAn instrument used to measure the intensity of radiations is the<\/td>\nRadiometer<\/td>\n<\/tr>\n
118<\/td>\nAn instrument used to measure electrical voltage is the<\/td>\nVoltmeter<\/td>\n<\/tr>\n
119<\/td>\nVTVM stands for<\/td>\nVacuum Tube Volt Meter<\/td>\n<\/tr>\n
120<\/td>\nA circuit which maintains a constant voltage is called<\/td>\nVoltage Stabilizer<\/td>\n<\/tr>\n
121<\/td>\nSCR stands for<\/td>\nSilicon Controlled Rectifier<\/td>\n<\/tr>\n
122<\/td>\nA device used to increase or decrease electric voltageis called a<\/td>\nTransformer<\/td>\n<\/tr>\n
123<\/td>\nA magnetic tape that records both audio and video signals is called a<\/td>\nVideo Tape<\/td>\n<\/tr>\n
124<\/td>\nThe first electronic calculator was manufactured in 1963 by<\/td>\nBell Punch Company,USA<\/td>\n<\/tr>\n
125<\/td>\nMASER stands for<\/td>\nMicrowave Amplification by stimulated Emission of Radiation<\/td>\n<\/tr>\n
126<\/td>\nA computer which can handle a large volume of numbers is called a<\/td>\nNumber cruncher<\/td>\n<\/tr>\n
127<\/td>\nPOST stands for<\/td>\nPower on Self Test<\/td>\n<\/tr>\n
128<\/td>\nPOST is a test carried out just after the computer has been<\/td>\nSwitched on<\/td>\n<\/tr>\n
129<\/td>\nAn index of the files stored on a disk is called<\/td>\nDirectory<\/td>\n<\/tr>\n
130<\/td>\nCP\/M stands for<\/td>\nControl program for Microcomputers<\/td>\n<\/tr>\n
131<\/td>\nCP\/M was developed by<\/td>\ndigital Research Inc.,USA<\/td>\n<\/tr>\n
132<\/td>\nMVS stands for<\/td>\nMultiple Virtual Storage Operating System<\/td>\n<\/tr>\n
133<\/td>\nMVS is used in<\/td>\nMainframe computers<\/td>\n<\/tr>\n
134<\/td>\nThe process of starting a computer is called<\/td>\nBooting<\/td>\n<\/tr>\n
135<\/td>\nA group of four binary digits is called a<\/td>\nNIBBLE<\/td>\n<\/tr>\n
136<\/td>\nBPI stands for<\/td>\nBit per Inch<\/td>\n<\/tr>\n
137<\/td>\nA smart card is a<\/td>\nmultifunctional microprocessor<\/td>\n<\/tr>\n
138<\/td>\nLIPS stands for<\/td>\nLogical Inferences Per Second<\/td>\n<\/tr>\n
139<\/td>\nA computerized machine is normally called a<\/td>\nRobot<\/td>\n<\/tr>\n
140<\/td>\nA robot is a machine directed by a<\/td>\nComputer<\/td>\n<\/tr>\n
141<\/td>\nA robot which resembles a human being is called an<\/td>\nAndroid<\/td>\n<\/tr>\n
142<\/td>\nPL\/1 stands for<\/td>\nProgramme Language-1<\/td>\n<\/tr>\n
143<\/td>\nThe language PL\/1 has combined features of<\/td>\nCOBOL and FORTRAN<\/td>\n<\/tr>\n
144<\/td>\nBASIC stands for<\/td>\nBegineers All Purpose Symbolic Instruction Code<\/td>\n<\/tr>\n
145<\/td>\nCOBOL stands for<\/td>\nCommon Busines Oriented Language<\/td>\n<\/tr>\n
146<\/td>\nALGOL stands for<\/td>\nAlgorithmic Language<\/td>\n<\/tr>\n
147<\/td>\nALGOL was developed in the early 1960s in<\/td>\nEurope<\/td>\n<\/tr>\n
148<\/td>\nCOBOL was first introduced in the year<\/td>\n1961<\/td>\n<\/tr>\n
149<\/td>\nFORTRAN stands for<\/td>\nFormula Translation<\/td>\n<\/tr>\n
150<\/td>\nFORTRAN was developed and introduced by IBM in the year<\/td>\n1957<\/td>\n<\/tr>\n
151<\/td>\nPL\/1 was introduced in the 1960s by<\/td>\nIBM<\/td>\n<\/tr>\n
152<\/td>\nCOMAL stands for<\/td>\nCommon Algorithmic Language<\/td>\n<\/tr>\n
153<\/td>\nBASIC was developed by<\/td>\nJohn Kemeny and Thomas Kurtz<\/td>\n<\/tr>\n
154<\/td>\nSNOBOL stands for<\/td>\nString Oriented Symbolic Language<\/td>\n<\/tr>\n
155<\/td>\nSNOBOL was developed in<\/td>\n1962<\/td>\n<\/tr>\n
156<\/td>\nLISP stands for<\/td>\nList Processing Language<\/td>\n<\/tr>\n
157<\/td>\nLISP was developed by<\/td>\nJohn McCarthy<\/td>\n<\/tr>\n
158<\/td>\nLoud speaker was invented by<\/td>\nRice Kellogg<\/td>\n<\/tr>\n
159<\/td>\nPROM stands for<\/td>\nProgrammable Read Only Memory<\/td>\n<\/tr>\n
160<\/td>\nTwo types of RAM chips are<\/td>\nDynamic,static<\/td>\n<\/tr>\n
161<\/td>\nData is fed into the computer by first converting it into<\/td>\nBinary codes<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

01 The unit of frequency is Hertz 02 The unit of resistance is Ohm 03 The device which makes or breaks a circuit is Switch 04 The path of an … Read More<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1003],"tags":[3363,3364,3190,3365,3366],"class_list":["post-7592","post","type-post","status-publish","format-standard","hentry","category-science-gk-2","tag-instruments","tag-inventors","tag-science-gk","tag-science-gk-inventions","tag-units","entry"],"_links":{"self":[{"href":"https:\/\/generalknowledgetoday.com\/index.php?rest_route=\/wp\/v2\/posts\/7592","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/generalknowledgetoday.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/generalknowledgetoday.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/generalknowledgetoday.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/generalknowledgetoday.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=7592"}],"version-history":[{"count":0,"href":"https:\/\/generalknowledgetoday.com\/index.php?rest_route=\/wp\/v2\/posts\/7592\/revisions"}],"wp:attachment":[{"href":"https:\/\/generalknowledgetoday.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=7592"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/generalknowledgetoday.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=7592"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/generalknowledgetoday.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=7592"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}