Grade 7 ICT paper marking scheme
(a) C
(b) D
(c) C
(d) D
(e) D
(f) A
(a) B
(b) D
(c) A
(d) C
CPU: central processing unit...
ROM: read only memory
RAM : random access memory
4
State whether each statement given below is true or false
(a) A computer is a device that stores and manages information.
........T...............
(b) There are computers in airplanes.
.......T...............
(c) Three kinds of computers are desktops, laptops and flash drives.
........F...............
(d) Cell phones and digital media players are computers.
........T...............
(e) A mouse is an output device.
.........F..............
1. Place a tick ( ) ,where appropriate, in the table given below if the item is an either
input device ,an output device or both an input and an output device .An example has
been done for you .
A monitor is an output device. So a tick has been placed in the input column near
monitor.
Item Input device Output device Both output and
input device
Scanner
Monitor
Webcam
Headphones
Printer
Touchscreen
microphone
6
A : system unit ,tower or cabinet
B: keyboard
C: monitor
D: mouse
E: DVD-ROM or CD-ROM drive
(a) In order to function, a computer requires both hardware and......software......................... .
(b) ...............hardware..................... is the name given to the physical parts of a computer
system.
(c) RAM and ...ROM.................... are two types of memory.
(d) A ......fan...................... prevents the CPU from overheating.
(e) A .........sound.......................... card allows the computer to produce sound.
(f) External hardware components are called ...........peripheral........................ device .
(g) A .............byte........................ is a group of 8 bits used to represent a character.
(h) A ................micro................... has low computing capacity.
(i) A ..........supercomputer........................is the fastest and most expensive computer.
(j) The speed of a computer is measured in ....hertz.................................. .
(k) Main memory is also known as .................primary storage.
(l) The ..........CPU......................... processes data to produce information.
8
Complete the table with the correct word or sentence given below.
Presentation software, Anti-virus software, example of operating system, laser
printer,barcode reader,microphone, scanner, managers and control the computer, acts as a
user interface between the user and the computer system
Column A Column B
System software managers and control the computer
Operating system acts as a user interface between the user and the computer
system
Application software Presentation software
Utility program Anti-virus software
Android example of operating system
Producing a hard copy of a laser printer
document
Making a digital copy of a picture scanner
which is on a Magazine cover
Used in supermarkets to read barcode reader
barcodes
(a) E-learning
It is learning through digital media especially using internet
(b) Power supply
It is a component that supplies power to the computer that is to all the peripheral component
of the computer
(c) Binary data
It consist of data which can be numerically represented by combinations of zeros and
ones
10 Re-arrange the following list of steps to withdraw money from ATM.
An example has been done for you.
Enter your PIN 2
Choose the amount you want by pressing the screen 4
buttons or use pad to enter amount
Insert your ATM card 1
Take your cash 5
Select” Withdrawal” from the list of transactions 3
Take your card 6
Take your receipt 7
11
a. Give one use of a web browser.
To access the internet
b. A main frame computer is used .......for...prediction of weather
12
.
How many bytes and bits can you count in the words given below?
(One letter is equal to 8 bits )
a. Champions League
Number of bytes : ........15.................................................
Number of bits : ............120.............................................
b. Toyota
Number of bytes : ..6.......................................................
Number of bits : .....48..................................................
13. (a) Name three types of optical discs
(i)....CD
(ii)....DVD
(iii)......Blu-ray disc
(b)
) Writedown two characteristics for each of the following.
(i) Laptop
It has almost all the features of a pc and can be transported unlike the pc cannot be transported
It has a large storage capacity unlike the tablet
The CPU in a laptop is very powerful compared to a tablet
(ii) Mobile phone
It is a handheld device
It has a long lasting battery
It has a high resolution camera
(iii) Tablet
It has a touch sensitive screen
Tablets are flexible and can be hold with one hand to hold the tablet
It can be easily carried on any given day and less heavier than a laptop
