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Chapter 2 CAYF
Inside the System Unit
| Question | Answer |
|---|---|
| Bit | A single circuit that either contains a current or does not. |
| Binary Digits | of 0 and 1 are used as a means of representing the off/on state of a computer switch, or bit. |
| Binary Number | Computers use a series of circuits whose pattern of off/on current is converted into strings of binary digits. |
| Kilobyte | (KB) one thousand per bytes |
| Megabyte | (MB)one million per bytes |
| Gigabyte | (GB)one billion per bytes |
| Terabyte | (TB) one trillion per bytes |
| System Unit | boxlike case that comes in a cariety of shapes ans sizes and houses the computer's main hardware components. |
| Footprint | is the amount of space used by the device |
| Tower case | a system unit case designed to sit on the floor next to a desk. |
| Minitower case | a smaller version of the tower casethat has less internal room for components. |
| Form Factor | is a specification for how internal components, such as the mother board are mounted inside the system unit. |
| expansion slots | receptacles that accept additional circuit boards or expansion cards. |
| Motherboard | is a large flat piece of plastic of fiberglass that contains thousands of electrical circuits ethced onto the board's surface. |
| Transistor | is an electronic switch (or gate) that controls the flow of electrical signals through the circuit. |
| System clock | is an electronic circuit that generates rapid pulses to syncronize the computers internal activities. |
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