Saint Joseph School Model Question | Computer Question Grade Six IGCSE

 

 Paper Final-2

     Sub: Computer                                Marks: 50                       Time:  1 hour 20 min

1. 1.      Write whether the statements are TRUE/FASE                                                                               5

a)      AND gate has two or more inputs but it has only one output

b)      In AND gate, if all inputs are 1 then output will be 0.

c)      NOT gate has multiple inputs.

d)     Low voltage of the pulse represents 1. 

e)      If all inputs are 1 then output will be 0 in NAND gate

1. 2.      Fill in blanks with suitable words.                                                                                                    10

a)      If input is 0 in the NOT gate, output always will be ………………

b)      NAND gate =     AND gate + ……… gate

c)      NOR gate is formed by combining ……………… gate with NOT gate.

d)     RAM is often called …………… memory

e)      1 GB = ………… MB

f)       A group of ……… bits is called byte.

g)      Digitiser is a ……….. device

h)      The box is either a ……….. of data.

i)        In OR gate, when all inputs are 1, then output will be …….

j)        The smallest unit of data is …………..

1. 3.      Write down the full form of each                                                                                       10

(a)    MICR (b) OMR (c) OCR (d) EPOS (e) ROM (f) RAM (g) CD-ROM 

(h) LCD (i) VDU (j) HD

 

1. 4.      Write down the difference between RAM and ROM                                                                        
2. 5.      Answer the following questions.                                                                                                 

a)      Draw the symbols of (a) OR gate and (b) AND gate with suitable truth tables.

b)      Draw the truth table for two input (a) NAND gate (b) NOR gate.

c)      What is (a) logic gate (b) data flow diagram?

d)     Write down the advantage of USB flash memory.

e)      Draw a structure diagram: Borrowing a book from your local library.

     (Use top down to break down the following overall task into smaller tasks)

f)       What is (a) open rectangle (b) Robots

g)      Write down the advantages and disadvantages of Laser printers.

h)      Write down short note on: (a) Joystick (b) Barcode reader (c) Digitisers (d) Dot-matrix printers

i)        What is top down approach? Explain it with examples.

j)        How many logic gates are there? Write down their names.

 

  ( This is model question that may help students the category of question)