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9Sci CH23
9th Science CH23 Electronics and Computers
| Term | Definition |
|---|---|
| amplification | the process of increasing the strength of an electrical signal |
| cathode-ray tube (CRT) | sealed glass vacuum tube that uses electrons and fluorescent material to produce images in a screen |
| computer virus | type of program designed to infect a computer, erase data, scramble other programs, or fill up so much memory that the system is harmed |
| diode | a type of rectifier that allows electric current to flow in only one direction |
| integrated circuit | a thin slice of silicon, often less than 1 cm on a side, which can contain thousands of resistors, diodes, and transistors; used in computers and electronic equipment |
| microprocessor | a computer’s “brain”; it receives input and tells the computer how to respond |
| RAM | Random-Access Memory in a computer; temporary memory is lost when the computer is turned off |
| rectifier | any device that converts alternating current (AC) into direct current (DC) |
| ROM | Read-Only Memory in a computer; it is permanent memory stored inside the computer, even when the power is turned off |
| transistor | a semiconductor that amplifies or strengthens an electrical signal or acts as a tiny on-off switch |
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djhockett5
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