O-LevelComputer ScienceHardware2210/12 · Oct/Nov 2016 · Q64 Marks
6 Four computer terms and eight descriptions are shown below. Draw lines to connect each computer term to the correct description(s). Computer term Description Data can be read but not altered Arithmetic and logic unit (ALU) Carries out operations such as addition and multiplication Control unit Stores bootstrap loader and BIOS Fetches each instruction in turn Random access memory (RAM) Carries out operations such as AND, OR, NOT Stores part of the operating system currently in use Read only memory (ROM) Stores data currently in use Manages execution of each instruction
- Four computer terms and eight descriptions are shown below. Draw lines to connect each computer term to the correct description(s).[4]
This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.
Mark scheme
Marking points from the official mark scheme (Oct/Nov 2016). The mark or mark type is shown in brackets.
- [4] 1 mark for both correct lines from each computer term.
- Arithmetic and logic unit (ALU) -> Carries out operations such as addition and multiplication
- Arithmetic and logic unit (ALU) -> Carries out operations such as AND, OR, NOT
- Control unit -> Fetches each instruction in turn
- Control unit -> Manages execution of each instruction
- Random access memory (RAM) -> Stores part of the operating system currently in use
- Random access memory (RAM) -> Stores data currently in use
- Read only memory (ROM) -> Data can be read but not altered
- Read only memory (ROM) -> Stores bootstrap loader and BIOS
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