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Worksheets8525 AQA GCSE 3.3.5 Character Encoding
Total questions: 20
Worksheet time: 16mins
How many bits are used to represent each character in the ASCII character set?
5
6
7
8
How many characters are contained in the ASCII character set?
64
128
256
512
In ASCII the character A is represented by the numeric code 65.
Which character is represented by the numeric code 70?
E
F
f
e
How many extra bits would be required to extend the maximum number of ASCII characters to 256?
1
2
3
4
Which of the following is an advantage of the Unicode character set?
Saves space on a computer hard drive
Quicker to process information
Represents characters from alphabets across the world
Easier to convert characters into binary
Which of the following is an disadvantage of the Unicode character set?
Increases space used on a computer hard drive
Can't represent symbols or emoji
Only represents characters from the British alphabet
More difficult to convert characters into binary
How many bits are used to represent the following word using the ASCII character set?
Apple
30
35
40
45
How many bits are used to represent the words below using the ASCII character set?
My friends
49
56
63
70
A character set is...
what language can be used in a computer system.
the fonts that a computer has installed.
a defined collection of characters recognised by a computer.
ASCII can represent more characters than Unicode?
ASCII stands for...
What is a benefit of extended ASCII?
All major languages can be represented
Many European languages can be represented as accents are included
Nothing as it just uses more space to store each letter
What does alphanumeric mean?
Letters and numbers
Uppercase and lowercase letters, digits and symbols
Letters, digits, symbols and some special commands like space
If the letter A is character code 65, what is H?
72
71
8
73
Unicode uses the same codes as ASCII up to 127?
True or False?
True
False
