Computer Terms -Grade 9
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Bus: A parallel circuit that connects the major components of a computer, allowing the transfer of electric impulses from one connected component to any other.
Cache: an area of memory that holds frequently accessed data or program instructions for the purpose of speeding a computer system performance.
CD-ROM: (compact disk read only memory) a rigid plastic disk that stores a large amount of data through the use of laser optic technology.
Circuitboard: flat piece of non-conductive material on which computer microprocessors and other electric components are mounted and electrically connected by thin strips of metals.
CPU: (central processing unit) the part of the computer that interprets data, executes instructions, and solves arithmetic problems; the main information processor or "brain" of the computer.
Disk: Drive the mechanism that rotates a storage disk (such as a floppy, hard, or CD-ROM disk) and read or writes data (or both) on a disk medium
DOS: (disk operating system) operating system for PCs before windows, computers ran using a basic language based on text instructions - no graphical user interface (GUI)
Expansion slot: a socket inside the computer console, designed to hold expansion boards and connect them to the system bus (data pathway)
Hard drive: where all the main information is stored in the computer. Used for storing data.
Keyboard: a keypad device with buttons or keys that a user presses to enter data, characters and commands into a computer
Megahertz: one million hertz (cycles per second), used to measure the velocity of the CPU and its computations.
Modem: a device that converts signals from one form to a form compatible with another kind of equipment to transmit data between computers, generally over phone lines
Monitor: A television-like output device connected to the computer that displays information on a screen. displays a variety of information (text, icons, images, etc.)
Motherboard: the main board of a computer, containing the primary components for the central processing unit, main memory, keyboard, monitor, and often having slots for accepting additional circuitry.
Mouse: a small mobile manual device that controls movements of of a cursor on a computer display
RAM: (random access memory) a form of temporary internal memory storage whose contents can be retrieved and altered by the user :also called read and write memory, it stores data only when the computer is on (when the computer is shut down any data not stored is lost).
ROM: (read only memory) permanent internal memory containing data or operating instructions that can be read but not altered by the user
USB: (universal serial bus) is a newer way to connect a variety of peripherals to the computer. Simplifies connection of up to 63 devices to the system while it is running.
Window: (on the screen) - a portion of the screen that can contain its own documents or messages. each window can also contain its own menu and other controls.
Windows: (operating system) - personal computer operating sold by microsoft corporation that allows to enter commands with a point and a click device ( a mouse). It provides users with a graphical user interface (GUI) which allows them to manipulate icons which on the computer screen issue commands.