Daily Practice - GCSE Computer Science
Systems, data representation, networks, algorithms and programming.
7th September 2023
- 1Data Representation: Number Systems
Convert the denary number 45 to hexadecimal.
- 2Data Representation: Images, Sound and Compression
A mono sound clip has a sample rate of 4000 Hz and lasts 2 seconds. Calculate the total number of samples taken.
- 3Programming Practice: Writing and Refining Programs
A programmer wants any syntax error in their program to be reported before the program starts running at all. State whether a compiler or an interpreter behaves this way, and explain why.
- 4SQL and Data Handling
Define the term 'primary key' as used in a database table.
- 5Trace Tables and Binary/Hex Conversions
State how many different values can be represented using 5 bits, and explain your reasoning.
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