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Paper 1: Principles of Computer Science Question number Answer Additional guidance Mark 1(a) Any one from: • non-English characters can’t be represented • 7/8 bits can’t represent all characters • not enough bits to represent all characters. (1) Question number Answer Additional guidance Mark 1(b) (3) Question number Answer Additional guidance Mark 1(c) 4S 1B 2W Accept S4 B1 W2 (1) Question number Answer Additional guidance Mark 1(d) A 0 ...

Answer ALL questions. Write your answers in the spaces provided. Some questions must be answered with a cross in a box . If you change your mind about an answer, put a line through the box and then mark your new answer with a cross . 1 Characters, numbers and colours are examples of data that can be represented in a computing device. (a) Give one limitation of the ASCII character set. (1) ........................................................................................................