1.2.1
Primary Storage
RAM, ROM, cache, and volatile or non-volatile memory.
OCR J277 · Component 01 · 1.2
Memory and storage
Primary storage, secondary storage, units, compression, and data representation.
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1.2.2
Secondary Storage
Magnetic, optical, and solid-state storage devices and suitability.
Magnetic, Optical and Solid-State Storage
1.2.2 · 28 mins · 20 XP · 10 Bits
1.2.3
Units
Bits, bytes, storage units, conversions, and file size reasoning.
1.2.4
Data Storage
Binary, denary, hexadecimal, binary arithmetic, shifts, and data representation.
Images: Pixels, Colour Depth and Metadata
1.2.4 · 30 mins · 20 XP · 10 Bits
1.2.5
Compression
Lossy and lossless compression, file size reduction, quality trade-offs, and suitable use cases.