3. Data Representation

2. The set of symbols that may be represented in a computer at a particular time.
5. 1000 megabytes.
7. 1000 bytes.
8. 1000 gigabytes. A left shift multiplies by 2 and a right shift divides by 2.
10. A numerical system of notation which uses 10 as its base.
12. A very simple form of lossless data compression in which runs of data are stored as a single data value and count, rather than as the original run. This is most useful on data that contains many such runs.
13. 1000 kilobytes.
14. The smallest unit of storage in a computer system, represented by either a binary 1 or 0."
16. The process of reducing the size of a file in terms of its storage size.
17. A wave of compression and rarefaction, by which sound is propagated in an elastic medium such as air.
18. Standard character set that replaces the need for all the different character sets.
20. is either the number of bits used to indicate the colour of a single pixel
22. A table which holds all the characters for a given character set along with their corresponding character codes.
24. A character set devised for early telecommunication systems but proved to be ideal for computer systems.

1. Recording audio in a format of continuous vibrations that are analogous to the original sound waves.
3. A lossless data encoding algorithm. The process behind its scheme includes sorting numerical values from a set in order of their frequency. The least frequent numbers are gradually eliminated , which adds the two lowest frequencies from the sorted list in every new “branch.” The sum is then positioned above the two eliminated lower frequency values, and replaces them in the new sorted list.
4. The representation (or size of the numbers) used to write samples in digital sound recording.
6. the smallest unit of a digital image or graphic that can be displayed and represented on a digital display device.
9. describes a numbering scheme in which there are only two possible values for each digit
10. A digital representation of the audio waveform for processing, storage or transmission."
11. A numerical system of notation which uses 16 rather than 10 as its base.
15. A collection of eight bits.
19. This is a value typically expressed in samples per second, or hertz (Hz), it represents the rate at which samples of an analogue signal are taken in order to be converted into digital form.
21. The number of pixels (individual points of colour) contained on a display monitor, expressed in terms of the number of pixels on the horizontal axis and the number on the vertical axis.
23. An image format where the picture is made up of discrete, individual pixels.