Daily Practice - GCSE Computer Science
Systems, data representation, networks, algorithms and programming.
- 1Data Representation: Number Systems
Add the 8-bit binary numbers 00101101 and 00010011, giving your answer as an 8-bit binary number.
- 2Data Representation: Images, Sound and Compression
A row of pixels is encoded using run-length encoding as: 3W 4B 3W. State the original row of pixels it represents.
- 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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