<p> PRACTICE PAPER -1 (2017-18) SUB- COMPUTER CLASS-IV</p><p>Q1. Tick(√) the correct option. </p><p>(a) Which was the first commercial computer produced in the US?</p><p>(i)IBM-701 (ii)UNIVAC (iii)ENIAC</p><p>(b)Who developed the population counting machine?</p><p>(i)Herman Hollerith (ii)John Napier (iii)IBM</p><p>(c)The devices that help us to enter data into a computer are called ______.</p><p>(i)Input devices (ii)Processing Devices (iii)Output Devices</p><p>(d)What are the devices that give us the result of the work done on a computer called?</p><p>(i)Input devices (ii) Processing Devices (iii) Output Devices</p><p>(e)Which of the following is responsible for performing various arithmetic operations?</p><p>(i)Control Unit (ii)ALU (iii)Memory Unit</p><p>(f)Which of the following software, manages and controls hardware? </p><p>(i)System Software (ii)Application Software (iii)Both of these</p><p>Q2. Fill in the blank. (a)______was the first calculating device. (b)______was the founder of IBM. (c)Full form of (ROM) ______. (d)______invented a calculating device called Napier’ Boneses. (e) Inkjet Printer is______Printer . (f) Abacus was the ______calculating machine. (g)______invented the first mechanical calculator in 1642. (h)Full form of (ABC) ______.</p><p>Q3. Write true (T) or false (F). </p><p>(a)Graphic Tablet is used to enter digital signature. [ ] (b)Inkjet Printer is impact Printer. [ ] (c)Dot Matrix Printer is Non Impact Printer. [ ] (d)Abacus was the second calculating machine. [ ] (e)A Micro Phone is an input device. [ ] (f)A Barcode reader reads barcodes as output data. [ ] (g)Monitor is an input device. [ ] (h)A computer stores data in the form of bits and bytes. [ ] Q4.Write the full form. (a)ALU______(b)PDA______(c)CRT______(d)LCD______(e)LED______(f)VDU______(g)CU______(h)MU______(i)ENIAC______(j)UNIVAC______Q5. Name the people who invented the following machines. (a) Z3 ______</p><p>(b) Analytical Engine ______</p><p>(c) Jacquard Loom ______</p><p>(d) Pascaline ______</p><p>(e) Napier’s Bones ______</p><p>Q6. Answer the following questions.</p><p>(a)Describe the machine invented by John Napier. </p><p>(b)What is an IPO cycle?</p><p>(c)Describe Harvard Mark I computer.</p><p>(d)What is Graphic Tablet?</p><p>(e)What is the use of Scanner and Printer?</p><p>(f)Give two differences between Dot Matrix Printer and Inkjet Printer.</p><p>(g)How is the data stored in a computer? </p><p>(h)How many types of Printer? </p><p>(i) How many types of Scanner are there?</p><p>(j) Draw the diagram of Storage Device. </p>