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AQA A-Level Computer Science
Media, Compression and Encryption

AQA · A-Level Computer Science

Media, Compression and Encryption

4Topics

2.3hStudy time

In this section

4 topics

Bitmap and Vector Graphics

Calculate raw bitmap storage

Digital Sound, ADC/DAC and MIDI

Explain sampling, quantisation and analogue/digital conversion

Lossless and Lossy Compression

Compare lossless and lossy requirements

Caesar, Vernam and Encryption Guarantees

Apply a stated Caesar shift

Work through each topic to complete the section.