Practice Paper -1 (2017-18)

PRACTICE PAPER -1 (2017-18) SUB- COMPUTER CLASS-IV

Q1. Tick(√) the correct option.

(a) Which was the first commercial computer produced in the US?

(i)IBM-701 (ii)UNIVAC (iii)ENIAC

(b)Who developed the population counting machine?

(i)Herman Hollerith (ii)John Napier (iii)IBM

(c)The devices that help us to enter data into a computer are called ______.

(i)Input devices (ii)Processing Devices (iii)Output Devices

(d)What are the devices that give us the result of the work done on a computer called?

(i)Input devices (ii) Processing Devices (iii) Output Devices

(e)Which of the following is responsible for performing various arithmetic operations?

(i)Control Unit (ii)ALU (iii)Memory Unit

(f)Which of the following software, manages and controls hardware?

(i)System Software (ii)Application Software (iii)Both of these

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) ______.

Q3. Write true (T) or false (F).

(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 ______

(b) Analytical Engine ______

(c) Jacquard Loom ______

(d) Pascaline ______

(e) Napier’s Bones ______

Q6. Answer the following questions.

(a)Describe the machine invented by John Napier.

(b)What is an IPO cycle?

(c)Describe Harvard Mark I computer.

(d)What is Graphic Tablet?

(e)What is the use of Scanner and Printer?

(f)Give two differences between Dot Matrix Printer and Inkjet Printer.

(g)How is the data stored in a computer?

(h)How many types of Printer?

(i) How many types of Scanner are there?

(j) Draw the diagram of Storage Device.