Processor

A small CPU on one semiconductor chip. See also CPU.

RAM

Random Access Memory. The area of the computer’s memory used to run programs and store data while you work. All data in RAM is erased when you turn off or reset the computer.

Real- time clock

Abattery-powered clock inside the computer that tracks the time and date, even when the computer is turned off.

Refresh rate

The frequency with which a monitor can redraw a screen

image. The faster the refresh rate, the less the screen will flicker.

Reset

To restart a computer without turning it off. You can reset your computer by pressing Ctrl Alt Del. Resetting erases all data stored in RAM and reloads the computer’s operating system.

ROM

Read Only Memory. Memory that can only be read and cannot be modified. ROM retains its contents even when you turn off the computer by using power from a backup battery.

Serial

The type of communication that transmits data from a serial interface to a serial device over a single wire. See also Parallel.

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