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WorksheetsY8 Understanding Computers Assessment
Total questions: 40
Worksheet time: 20mins
Which of the following is computer hardware?
Monitor
Keyboard
Scanner
All of the above
Which of the following is an input device?
Monitor
Mouse
Printer
CD ROM
Which of the following is an output device?
Keyboard
Hard Disc
CD ROM
Monitor
Which of the following is a storage device?
CD ROM
Laser printer
RAM (Random Access Memory)
A scanner
Which of the following is an input device?
A digital camera
a speaker
a flash drive
an inkjet printer
Which of the following is an output device?
A lift button
A joystick
A laser printer
A scanner
Which of the following is computer software?
Touch screen
Microsoft Windows
Printer
Floppy disc
A CD ROM is...
a magnetic storage device read by magnetised read-write head
an optical storage device read by a laser beam
a flash memory storage device
a magnetic storage device read by a laser beam
On a CD ROM ...
data is written in concentric circles
you can write data to the disk more than once
Pits and Lands are used to represent 1s and 0s
All data is represented in ASCII
What would be a suitable device to transfer 12 photos from one PC to another?
A USB memory stick
A CD ROM
A scanner
A printer
Computer memory that temporarily stores information is called:
CPU
RAM
ROM
ASCII
Approximately how many cycles per second in 1Kilohertz (KHz)?
100
1,000
100,000
1,000,000
Approximately how many cycles per second in 1Megahertz (MHz)?
1,000
100,000
1 million
1 billion
Which of the following is likely to be held in Random Access Memory (RAM)?
Start-up instructions used when a PC is switched on
A document that the user is typing in Word
Washing programs used in a washing machine
Documents deleted by the user
Which of the following is likely to be held in Read Only Memory (ROM)?
Start-up instructions used when a PC is switched on
Software such as Word while a user is typing a document
A film loaded from a DVD
A document saved by the user for permanent storage
What is the function of the Central Processing Unit (CPU)?
To act as a temporary data store
To act as a permanent data store
To hold computer programs while they are being executed
To fetch, decode and execute instructions
Moore’s Law states that:
memory capacity in a computer will double every ten years
memory capacity in a computer will double every two years
processor speed can never exceed 10GHz
processor speed depends on memory capacity
A single binary digit is known as
a bit
a byte
a character
an integer
How many bits in a byte?
2
4
8
100
How many bytes in a Kilobyte (Kb)?
1,000
100,000
1,000,000
100
What number system do computers use?
Binary
Denary
Decimal
ASCII
How many different binary codes can be represented in 2 bits?
2
4
8
16
How many different binary codes can be represented in 1 byte?
2
8
128
256
The binary number 1010, converted to denary (decimal) is
2
3
10
18
The binary number 0001 0001, converted to denary (decimal) is:
3
17
101
10,001
The binary number 00110011, converted to denary (decimal) is:
4
33
51
99
The denary (decimal) number 13 converted to binary is:
1101
1111
0111
1011
The denary (decimal) number 23 converted to binary is:
0001 0111
0000 1111
0111 0000
0111 0001
The binary number 0011 0100, added to 0001 0010 is
0100 0110
0010 0000
0010 0110
0111 0110
The binary number 0001 0100, added to 0000 0011 is
0011 1000
0111 0001
0010 0111
0001 0111
The binary number 1001, added to 0100 is
1101
1111
0011
1010
The binary number 0110 , added to 0011 is
1001
1111
1100
1010
ASCII is an abbreviation for...
American Standard Code for Information Interchange
American System Code for Information Interchange
American Standard Code for Information exchange
Alternative Standard Code for Information Interchange
Why do computers need to use ASCII?
ASCII is a character encoding standard for electronic communication. ASCII codes represent text in computers.
ASCII is a code used to keep information secret
ASCII is used to save images and photos on the computer
ASCII is used to save sound and video on the computer
ASCII is:
a programming language
a code for representing characters in binary
a type of computer
a method of translating from denary to binary
Given that the letter G is represented by the binary code 0100 0111, what code represents H?
0100 0110
0100 1111
0100 1000
0101 0111
Which of the following can be represented in ASCII?
Alphabetic characters such as A, B, C
Numeric characters such as 5, 6, 7
“Special” characters such as %,*, &
All of the above
Given that the number 1 is represented in ASCII by the binary code 0011 0001, and the number 2 is represented by the binary code 0011 0010, what code represents 3?
0011 0011
0110 0011
0011 0100
0101 0011
Which of the following is true?
All PCs use the ASCII code for representing characters
A space between words is a character which can be represented in ASCII
One byte of data can hold one ASCII character
All of the above
Which of the following characters can be represented in ASCII?
½
A space
The letter Z
All of the above
