Daily Practice · GCSE Computer Science

Daily Practice - GCSE Computer Science

Systems, data representation, networks, algorithms and programming.

3rd October 2025

5 questions · GCSE · 123 questions in this band

1
Trace Tables and Binary/Hex Conversions
Convert the hexadecimal number FF to an 8-bit binary number.
2
Systems Architecture
Which CPU register holds the address of the next instruction to be fetched?
3
Memory and Primary Storage
Which of RAM and ROM is volatile, meaning its contents are lost when the power is removed?
4
Secondary Storage
State the typical maximum capacity of a single-layer DVD.
5
System Software
Each pair from the previous question is stored using 2 bytes. Calculate the compression ratio achieved, given the uncompressed row (1 byte per pixel) uses 8 bytes.

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