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magnetic hard drive One of two technologies used by hard drives where data is stored as magnetic spots on disks that rotate at a high speed. The other technology is solid state drive (SSD).
main board See motherboard
megahertz (MHz) One million Hz, or one million cycles per second. See hertz (Hz).
memory Physical microchips that can hold data and programming, located on the motherboard or expansion cards.
microprocessor See central processing unit (CPU).
monitor The most commonly used output device for displaying text and graphics on a computer.
motherboard The main board in the computer, Also called the system board. The CPU, ROM chips, DIMMs, RIMMs, and interface cards are plugged into the motherboard.
mouse A pointing and input device that allows the user to move a cursor around a screen and select items with the click of a button
non–volatile memory nonvolatile – Refers to a kind of RAM that is stable and can hold data as long as electricity is powering the memory.
parallel ATA (PATA) An older IDE cabling method that uses a 40–pin flat or round data cable or an 80–conductor cable and a 40–pin IDE connector. See also serial ATA.
parallel port A female 25–pin port on a computer that can transmit data in parallel, 8 bits at a time, and is usually used with a printer. The names for parallel ports are LPT1 and LPT2.
peripheral device Devices that communicate with the CPU but are not located directly on the motherboard, such as the monitor, floppy drive, printer, and mouse.
port (1) As applied to services running on a computer, a number assigned to a process on a computer so that the process can be found by TCP/IP. Also called a port address or port number.
power supply A box inside the computer case that supplies power to the motherboard and other installed devices. Power supplies provide 3.3, 5, and 12 volts DC. Also called a power supply unit (PSU).
primary storage Temporary storage on the motherboard used by the CPU to process data and instructions. Memory is considered primary storage.
printer A peripheral output device that produces printed output to paper. Different types include dot matrix, ink–jet, and laser printers.
processor See central processing unit (CPU).
program A set of step–by–step instructions to a computer. Some are burned directly into chips, while others are stored as program files. Programs are written in languages such as Visual Basic and C++.
protocol A set of rules and standards that two entities use for communication.
Created by: REILLY44
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