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Computer Science
OCR GCSE Computer Science
Memory and Storage
OCR GCSE Computer Science · J277 · 1.2
Memory and Storage
Paper 1
· 28 notes
1.2.1
Primary Storage
Need for Primary Storage
Free
Differences Between RAM and ROM
Pro
Purpose of ROM
Pro
Purpose of RAM
Pro
Virtual Memory
Pro
Cache Memory
Pro
1.2.2
Secondary Storage
Need for Secondary Storage
Pro
Types of Secondary Storage
Pro
Selecting Suitable Storage
Pro
Comparing Storage Devices
Pro
1.2.3
Data Units
Units of Data Storage
Pro
Binary Data Conversion
Pro
Calculating Data Capacity
Pro
1.2.4
Data Storage
Denary and Binary Conversion
Pro
Binary Addition and Overflow
Pro
Denary and Hexadecimal Conversion
Pro
Binary and Hexadecimal Conversion
Pro
Binary Shifts
Pro
Binary Character Representation
Pro
Character Sets
Pro
Bits per Character and Capacity
Pro
Binary Image Representation
Pro
Image Metadata
Pro
Colour Depth and Resolution
Pro
Digital Sound Sampling
Pro
Sound Quality and File Size
Pro
1.2.5
Compression
Need for Compression
Pro
Types of Compression
Pro
Practise with past papers
Key terms & definitions
