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Computer Science AQA A-Levels

This class was created by Brainscape user George White. Visit their profile to learn more about the creator.

By: George White
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Decks in this class (21)

Number systems
Definition of a natural number 1,
What represents natural numbers 2,
Definition of an integer 3
14  cards
Number bases
Definition of a bit 1,
Definition of a byte 2,
What base is the decimal number s...
11  cards
Units of information
Kilo is 10 1,
Mega is 10 2,
Giga is 10 3
18  cards
Hexadecimal
What does hexadecimal do 1,
What are hexadecimals commonly us...,
How many hexadecimal are needed t...
15  cards
Two’s compliment
What does a 1 at the start of a b...,
What does a 0 at the start of a b...,
What is 1 in binary 8 digits 3
10  cards
Character code system
What does ascii stand for 1,
What is ascii 2,
Define character code 3
15  cards
Fixed point form
What do fixed point numbers repre...,
What is the binary equivalent to ...,
Where is the binary point positio...
8  cards
Floating point
What is the floating point made u...,
What is the mantissa 2,
Advantages of floating points 3
4  cards
Normalisation
What is normalisation 1,
What is the precision in relation...,
Converting denary to binary float...
12  cards
Error detection & correction
What is majority voting 1,
What are advantages of majority v...,
What are disadvantages of majorit...
12  cards
Rounding Errors
What is an absolute error 1,
Will an absolute error always be ...,
When could you apply an absolute ...
7  cards
Sound Representation
What does adc stand for 1,
What does dac stand for 2,
What is sound 3
15  cards
Compression
What is lossless compression 1,
What is lossy compression 2,
When should lossy compression be ...
11  cards
Images
What is a bit mapped graphic image 1,
What is a pixel 2,
What are bitmap graphics 3
11  cards
Encryption
Define cipher 1,
Define plaintext 2,
Define ciphertext 3
8  cards
Vernam Cipher
What is the only cipher proven to...,
What are the perfect conditions t...,
What are the steps of the vernam ...
3  cards
Hardware & Software
Define hardware 1,
Define software 2,
Define resource management 3
17  cards
Combining Logic Gates
What are adders 1,
Where are adders found 2,
What do half adders do 3
12  cards
Hardware Storage Devices
Secondary storage devices 1,
Drum memory 2,
Core memory 3
17  cards
Boolean Algebra
What is the order of preference 1,
Ben needs xrays and operations bn...,
Double negation 3
9  cards
External Hardware
How does a digital camera work 1,
What does a digital camera store 2,
What is an advantage of a digital...
15  cards

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Computer Science AQA A-Levels

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