Data representation (J277)

2. An error that happens when a number is too big to fit in its allocated space.
6. The process of making a file smaller to save storage space.
9. The original form of sound waves before they are converted to digital.
11. The number of pixels in an image, affecting its clarity and detail.
12. A common character set that uses numbers to represent letters and symbols.
13. The number of bits used to store each sample of sound.
16. Extra information stored with a file, like an image's height and width.
19. Our everyday number system, also known as base 10.
20. A widely used character set that includes many different languages.

1. A group of 8 bits, a common unit of computer memory.
3. A type of compression that reduces file size without losing any data.
4. The number system computers understand, using just 0s and 1s.
5. The number of bits used to represent the colour of each pixel.
7. A collection of characters that a computer can recognise and use.
8. Rate How many times a sound is measured per second when digitalising it.
10. Moving bits left or right to quickly multiply or divide a number.
14. A tiny coloured dot that forms part of a digital image.
15. A number system with 16 symbols, often used to make binary easier to read.
17. The smallest piece of data a computer can store.
18. A type of compression that removes some data permanently.