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WorksheetsN5 Computer Systems
Total questions: 42
Worksheet time: 27mins
This transfers the memory location to be read from or written to
Arithmetic and Logic Unit (ALU)
Data Bus
Address Bus
Control Unit
This transfers data between the processor and memory
Arithmetic and Logic Unit (ALU)
Data Bus
Address Bus
Registers
Performs all calculations and logical operations
Arithmetic and Logic Unit (ALU)
Data Bus
Address Bus
Control Unit
Temporary memory locations within the processor
Arithmetic and Logic Unit (ALU)
Data Bus
Address Bus
Registers
Controls the sequencing of fetching, decoding and executing instructions
Arithmetic and Logic Unit (ALU)
Data Bus
Address Bus
Control Unit
All RAM memory locations have a unique address for correct data read/write.
True
False
Good for testing, errors are highlighted straight away. This is an advantage of
Translator
Compiler
All lines are translate to machine code, this machine code version is then saved and can be executed. Machine code can be run again, and again without further translation. This is a definition of a
Translator
Compiler
Translates one program line into machine code and executes immediately.
Translator
Compiler
0.100101 x 25
What is the mantissa?
100101
2
5
0100101
0.100101 x 25
What is the exponent?
100101
2
5
10
0.100101 x 25
Can also be written as?
0.100101 x 2101
0.100101 x 2111
0.100101 x 2011
0.100101 x 2100
0.100101 x 25
Can also be written as?
18.5
1.85
185
0.185
What is the binary representation of the decimal number 13?
1101
1011
1110
1001
What is the binary representation of the decimal number 24?
0001 1000
0001 0110
0101 1011
0100 1100
What is the binary representation of the decimal number 255?
1111 1111
1101 1011
1110 1101
1001 1001
What is the binary representation of the decimal number 63?
1111 1111
1101 1011
0011 1111
1001 1001
Which is a non-volatile memory?
RAM
ROM
Cache
Registers
Which is used to store data temporarily while the computer is running?
RAM
ROM
Hard Drive
Cache
What is the primary function of the Control Unit in a CPU?
Perform arithmetic operations
Store data
Control the execution of instructions
Transfer data between memory and processor
Which is a characteristic of volatile memory?
Data is retained when power is off
Data is lost when power is off
Data is stored permanently
Data can only be read, not written
How many bits are needed to store This World in Extended ASCII?
88
11
80
10
How many bytes are needed to store the phrase Hello World in Extended ASCII?
88
11
80
10
How many bytes are needed to store the phrase Computer Science in Extended ASCII?
16
15
8
112
Reorder the following, smallest first
bit
byte
kilobyte
megabyte
gigabyte
There are (a) bits in a byte
What does ASCII stand for?
American Standard Code for Information Interchange
American Standard Code for Internet Interchange
American Standard Code for International Interchange
American Standard Code for Internal Interchange
How many characters can standard ASCII represent?
128
256
512
1024
What is a bitmap graphic?
A graphic composed of pixels in a grid
A graphic composed of mathematical equations
A graphic that uses vector paths
A graphic that uses 3D models
Which file format is used for bitmap graphics?
SVG
JPEG
EPS
What is a disadvantage of bitmap graphics?
They are resolution-independent
They can be easily scaled without loss of quality
They can become pixelated when enlarged
They use less memory compared to vector graphics
What is a vector graphic?
A graphic composed of pixels in a grid
A graphic composed of mathematical equations
A graphic that uses bitmap images
A graphic that uses 3D models
Which file format is used for vector graphics?
JPEG
PNG
SVG
GIF
What is an advantage of vector graphics over bitmap graphics?
They are resolution-independent
They can become pixelated when enlarged
They use more memory compared to bitmap graphics
They are composed of pixels
Unicode's advantage over ASCII is
It can store more characters
It takes less bits to store a character
It only has 1 alphabet
It was the first standard
You can save energy use of a computer by
Turning down the brightness of the monitor
Turning up the brightness of the monitor
Keeping your laptop always charging
Switching off when not in use
The part of the processor that performs all calculations and logical operations is the
(a)
Which file format is used for vector graphics?
(a)
How many characters can standard ASCII represent?
(a)
How many bits are needed for 1 character in extended ASCII?
(a)
Extended ASCII uses (a) original ASCII uses (b) per character
Bitmap file formats include
SVG
GIF
JPEG
PNG
