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Chapter 1 · Paper 1: Computer Systems
Data representation
How computers store numbers, text, sound and images.
3 topics3 free
Start this chapter Topics in this chapter
- 1.1
Number systems
FreeBinary, denary and hexadecimal, converting between them, binary addition, overflow, logical shifts and two's complement.
- 1.2
Text, sound and images
FreeLesson coming soonCharacter sets such as ASCII and Unicode, how sound is sampled and how bitmap images are built from pixels.
- 1.3
Data storage and compression
FreeLesson coming soonUnits of storage, working out file sizes, and lossy versus lossless compression.
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