Flashcards
Data Representation: Units
Cards in this deck (9)
- 1BitA bit is a single unit of storage which acts as an electrical switch which detects electrical impulses. If there is one present then the switch is 'on', otherwise it is 'off'. A bit can hold either a 1 or a 0.
- 2Nibble4 Bits
- 3Byte8 Bits
- 4Kilobyte8,000 Bits
1,000 Bytes - 5Megabyte8,000,000 Bits
1,000,000 Bytes
1,000 Kilobytes - 6Gigabyte8,000,000,000 Bits
1,000,000,000 Bytes
1,000,000 Kilobytes
1,000 Megabytes - 7Terabyte8,000,000,000,000 Bits
1,000,000,000,000 Bytes
1,000,000,000 Kilobytes
1,000,000 Megabytes
1,000 Gigabytes - 8Petabyte8,000,000,000,000,000 Bits
1,000,000,000,000,000 Bytes
1,000,000,000,000 Kilobytes
1,000,000,000 Megabytes
1,000,000 Gigabytes
1,000 Terabytes - 9Why does data need to be converted into binary to be processed by computers?-Computers function by receiving electrical impulses. These impulses are stored in singular units called bits. A bit can store one of two values: 1s or 0s.
-It can be thought of as a switch, it can either be on if an impulse is present or off if it is not. If this electrical switch is on then the bit holds the value of 1 and if it is off then a 0 (usually).
-Computers specifically use binary as it only has two bases (1s and 0s). This is needed as the 'switch' can only exist in two states: on or off.
-To conclude, binary is a way of representing text, numbers, images etc. and it is needed because computers can only understand binary.
Information
- Description
- Definition of a bit; the units; why a computer needs binary.
- Created by
- Harbinn Kaur Mann
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