CBSE Class 3 Computer Know Your Computer Worksheet

TOPIC – KNOW YOUR COMPUTER
 

Name the following :

Question. Converts hard copy into soft copy- ___________

Answer : Scanner

Question. It helps to listen music – ____________

Answer : Speakers

Question. 2 Input device - __________, ___________

Answer : mouse , scanner

Question. 2 Output device - _________, ___________

Answer : monitor, speakers 

Rearrange the Jumble words :

Question. MNOTIOR - ___________

Answer : MONITOR 

Question. SACNENR - ___________

Answer : SCANNER 

Question. HRADAWER - ___________

Answer : HARDWARE 

Question. MUOSE - ___________

Answer : MOUSE

Question. KYEOBARD – ___________

Answer : KEYBOARD

Question. JYOTSCIK - ___________

Answer : JOYSTICK 

Missing letters :

Question. S _ E _ K _R S

Answer : P, A, E 

Question. S _ F T _ A _ E

Answer : O, W, R

Question. F _O_ P Y

Answer : L, P

Question. P _I _ T _ R

Answer : R, N, E 

Question. P E _ D R _V E

Answer : N, I

Question. D _T _

Answer : A, A

Fill in the blanks :

Question. Printer makes a _________ copy of the processed information on paper.

Answer : Permanent

Question. _______is used to play games on computer.

Answer : Joystick

Question. ________ is known as VDU.

Answer : Monitor 

Question. __________ is a pointing device .

Answer : Mouse 

Question. Hardware equipment include ______and ___________.

Answer : CPU and Keyboard 

Q.1. Write the LOGO command for the following:

a. Move the turtle forward by 40 steps _________________________

b. Move the turtle backward by 20 steps _________________________

c. Rotate the head of the turtle towards right direction by 90 steps _________________________

d. Rotate the head of the turtle towards left Direction by 45 steps _________________________

e. Hide the turtle _________________________

f. Make visible the hidden turtle _________________________

g. Lift the turtle’s pen from screen _________________________

h. Put the turtle’s pen down on the screen _________________________

i. To erase everything from the graphic area _________________________

j. To bring the turtle to the middle of the screen _________________________

1 -Fill in the blanks :--

a- A group of instructions given to the computer to make it work are called software .

b- Two basic parts of the computer are hardware and software.

c- We can listen to sound using speakers and head phones.

d- Hardware devices can be classified as input devices , output devices, Storage devices and processing unit.

e- Input (Data + Instructions) + Processing = Output ( information)

2- Draw hardware devices used to :---

A- Input data :--

 

Write the full form of the following abbreviations :

Question. PD

Answer : Pen Drive.

Question. UPS

Answer : Uninterrupted Power Supply.

Question. DVD

Answer : Digital Versatile Disc.

Question. VDU

Answer : Visual Display Unit.

Question. USB

Answer : Universal Serial Bus.

True/False :

Question. A joystick is used to listen to music.

Answer : False

Question. A Keyboard has 105 keys.

Answer : True

Question. A scanner is used to play games on computer.

Answer : False

Question. A mouse usually has two buttons.

Answer : True

Question. Monitor is an input device.

Answer : False

Very Short Answer Type Questions :

Question. What is computer?
Answer : A computer is a device which runs on electricity and is used to process the data.

Question. What is the function of CPU?
Answer : CPU is called the brain of the computer. It performs calculations and comparisons.

Question. What is the difference between Scanner and Printer?
Answer :

Question. Name two components of a computer.
Answer : 1. Hardware
2. Software

1. Fill the correct word in the blanks.

Booting, Mouse pointer, Start, Windows, Operating system

a. _________ is the most common operating system.

b. _________ is a small arrow on the computer screen, which moves when you move your mouse.

c. ______________ controls overall working of the computer.

d. The _________ button is found on the extreme left corner of the taskbar.

e. _________ is the process in which operating system is loaded into computer’s memory.

2. Unscramble the scrambled words:

a. ESOUM __________

b. NSDOWIW ___________

c. INGARTEPO MESYTS_________

d. RTSATER __________

e. KEDSOPT _________

3. State whether the following sentences are True or False:

a. Linux is one of the most popular operating system software. ______

b. The mouse pointer is a small arrow on the computer screen. ______

c. Booting means that the computer shuts down and starts up again immediately. _______

d. Icon is a long colourful bar located at the bottom of the desktop. _______

e. The notification area does not include the volume bar. _______

A- Fill in the blanks:----
1- Tired 6- hospitals
2- Records 7-four
3- LCD 8-printer
4- Ticket reservation 9-multi tasking
5- Machine 10-control unit

B- Write True or False:-
1- False 6-False
2- False 7-False
3- False 8-False
4- False 9-False
5- False 10-False