Daily Practice - GCSE Computer Science
Systems, data representation, networks, algorithms and programming.
10th August 2024
- 1Boolean Logic
A logic circuit has inputs C and D. C feeds into a NOT gate; the output of the NOT gate and D feed into an OR gate, giving output Y. Write the Boolean expression for Y and state its value when C = 1 and D = 0.
- 2Data Representation: Number Systems
Convert the denary number 5 to a 4-bit binary number.
- 3Data Representation: Images, Sound and Compression
State one example of a file format that commonly uses lossy compression.
- 4Programming Practice: Writing and Refining Programs
Write the pseudocode header and body for a function called isAdult that takes one integer parameter called age and returns True if age is 18 or over.
- 5SQL and Data Handling
A table called bookings has fields bookingId, customerName and eventDate. Write an SQL statement that deletes the booking with bookingId 45.
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