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GCSE Computer Science Flashcards

7 cards from real GCSE practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 GCSE Computer Science flashcards as text

  1. What is the decimal value of the binary number 1010?

    Answer: 10

    1010 in binary equals 1×8 + 0×4 + 1×2 + 0×1 = 10 in decimal.

  2. How many bits are in one byte?

    Answer: 8

    A byte consists of 8 bits, which is the standard unit of digital information storage.

  3. What does ASCII stand for?

    Answer: American Standard Code for Information Interchange

    ASCII stands for American Standard Code for Information Interchange, a character encoding standard used to represent text in computers.

  4. Which number system uses base 16?

    Answer: Hexadecimal

    Hexadecimal uses base 16, with digits 0–9 and letters A–F representing values 0 to 15.

  5. What is the result of the binary addition 1011 + 0101?

    Answer: 10000

    1011 (decimal 11) + 0101 (decimal 5) = 16, which in binary is 10000.

  6. What is the purpose of a check digit?

    Answer: To detect errors in data entry or transmission

    A check digit is appended to data to detect errors caused by mistyping or corruption during transmission.

  7. What does the term 'pixel' stand for?

    Answer: Picture element

    Pixel is a portmanteau of 'picture element', the smallest addressable unit in a digital image.