Daily Practice - GCSE Computer Science
Systems, data representation, networks, algorithms and programming.
18th January 2024
- 1Data Representation: Number Systems
Convert the denary number 5 to a 4-bit binary number.
- 2Data Representation: Images, Sound and Compression
State one example of a file format that commonly uses lossy compression.
- 3Programming Practice: Writing and Refining Programs
State the key difference between a procedure and a function.
- 4SQL and Data Handling
A table called products has fields productId, name, price and stock. Write an SQL statement that changes the price of the product with productId 7 to 15.99.
- 5Trace Tables and Binary/Hex Conversions
A pseudocode algorithm is: count <- 0, x <- 10, WHILE x > 0, count <- count + 1, x <- x - 3, ENDWHILE, OUTPUT count. Complete a trace table for x and count, laid out as x | count, then state the value output.
You are looking at an earlier sheet. Today's sheet is the one that adds a day.
Your run is kept in this browser only, and there is no account.
Recent GCSE Computer Science sheets
Every sheet is deterministic: the same date always regenerates the same five questions. All of January 2024, including the monthly compilation PDF.