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| A computer's physical components |
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| A set of instructions that directs the hardware to accomplish a certain task |
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| 1940, came up with the idea to store and read two values: on and off |
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| The number system that uses two digits; 0 and 1 |
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| One digit of the binary number system; either a 0 or a 1 |
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| Central Processing Unit - also called the microprocessor or processor - central to all processing done on the computer |
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Input- Keyboard, mouse, scanner, microphone, CD-ROM, DVD-ROM
Output - monitor, printer, speakers
Both - modem, NIC, USB port, HD, CDRW, DVDRW |
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| A wireless or wired connection to the computer |
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| Primary input device - Enhanced keyboards have 104 keys - generally connected to the keyboard port (but can be wireless) |
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| A pointing device used to move the pointer around the monitor screen and make selections using buttons (1, 2, or 3 buttons)on the mouse - Generally connected to the mouse port (but can be wireless) |
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| Output device - A visual display for output from the computer. It has its own power supply. |
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| Mearured diagonally across the screen in inches |
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| Measured in dots per inch - the more dpi the sharper the image, but smaller the icons/images |
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| Output device used to create a "Hard Copy" on paper - Types include: inkjet, laser, thermal, solid ink, and dot-matrix - Printers have their own power supply. |
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| A board that holds microchips and/or integrated circuits and traces that connect them - Some circuit boards are also called expansion cards |
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| A circuit board that is installed in an expansion slot on the motherboard |
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| Integrated Circuits - Also referred to as IC chips |
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| Complementary Metal-Oxide Semiconductor |
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| Transistor-Transistor Logic |
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| Connect devices to one another and to the mother board |
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| Supplies power to devices and the motherboard |
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| Largest and most important circuit board in the computer - Also called the main board or the system board |
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| A device that is not installed directly to the motherboard |
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| External port for devices that transfers data serially (mouse-modem) |
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| External port for devices that transmits data in parallel (printers) |
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| Universal Serial Port - I/O devices like keyboards, mice, cameras, phones, printers, scanners, phonographs, HDs, pendrives, CDRW...etc. |
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| FireWire Port - high speed data transfer, mostly used for multimedia devices - DVD camcorders |
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| A group of microchips on the motherboard that control the flow of data to and from the CPU |
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| The CPU uses temporary storage (RAM) to hold data and instructions while processing |
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| Random Access Memory (temporary - data is gone when the power is turned off) |
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