Lesson Instructions

Watch and follow the YouTube video, the lesson contains three parts:

  1. Key Information and content - all you need to do here is watch and listen

  2. Learning activity - this activity involves answering different questions about Characters.

  3. Consolidation - these are past exam question and are for deliberate practice to check your understanding.

Task - Characters

Task - Exam Questions - Deliberate Practice

Exam Questions - Web

Mark Scheme

Question 1


One mark for each bullet point

  • Each character is given a numberic code

  • Including symbold, digits, upper and lower case

  • This code is then stored in binary

  • Each character takes 1 byte

  • Text is stored as a series of bytes (1 per character)

  • Some codes are reserved for control characters (eg TAB, Carriage Return)


One mark for each bullet point

  • All the characters which are recognised/can be represented by the computer system


One mark for each bullet point

  • Unicode has a much larger character set

  • ... and can represent many more characters from all alphabets.

  • Because unicode uses 16 bits...

  • ... and ASCII uses fewer/7/8 bits.

Question 2

  • 0100 0011 0100 0001 0100 0010