The meaning of computation according to definitions.net and wikipedia:
‘Computation is any type of calculation or use of computing technology in information processing. Computation is a process following a well-defined model understood and expressed as, for example, an algorithm, or a protocol.
…A computation can be seen as a purely physical phenomenon occurring inside a closed physical system called a computer. ‘
What is a computer?
A computer is a ‘thinking machine’ an information processor, we use it to manipulate information.
The computer has to perform 4 different tasks:
1. Take input: keyboard, mouse, microphone, camera, touchscreen
2. Store information: storing the information in the memory, for example: hard drive or memory card
3. Process it: a computer’s processor takes information for memory, it manipulates it or changes it using algorithm and then it sends the processed information back to be stored in memory again. This continues until the information is ready to be output.
4. Output the results: computer display, that can show videos/photos/text/interactive games/signals