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Unit 2 Lesson 1
Vocabulary for Unit 2 Lesson 1
| Term | Definition |
|---|---|
| Data | Values representing information that can be stored and edited by a computer |
| Analog Data | Data that needs to be first translated into a digital form before it can be used by a computer. For example, paper copies of a worksheet need to be typed into a word processor software; or human speech needs to be recorded via audio software. |
| Digital Data | Data that can be directly used by a computer; this means that data needs to be encoded and stored as a sequence of 0s and 1s (i.e., bits) |
| Encode | To translate human-readable data into a form that is efficient or protected for transmitting or storing. |
| Decode | To translate encoded data back into a human-readable form so it is easier to read and understand |
| Decimal System | A method of describing numbers, counting, and doing math based on the number 10. Decimal systems typically use ten different symbols: 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9. |
| Bit | The smallest unit of information used in computers, a unit of information that can be either 1 or 0 like an on/off switch, (combination of the words binary and digit) |
| Binary System | A method of describing numbers, counting, and doing math based on the number 2, binary systems typically use two different symbols: 0 and 1. |
| Byte | A group of 8 bits, ranging from 00000000 to 11111111. There are 256 possible combinations of 8 bits (do you see why? |
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