Daily Practice · GCSE Computer Science

Daily Practice - GCSE Computer Science

27th April 1996

5 questions · GCSE · 123 questions in this band

1
Data Representation: Number Systems
Convert the 4-bit binary number 1101 to denary.
2
Data Representation: Images, Sound and Compression
An image uses a colour depth of 2 bits per pixel. Calculate the maximum number of different colours it can represent.
3
Programming Practice: Writing and Refining Programs
State the correct order of the three operations used to read data from a text file.
4
SQL and Data Handling
State what a foreign key is used for.
5
Trace Tables and Binary/Hex Conversions
Convert the denary number 39 to an 8-bit binary number, showing your working.

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