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head. A device that reads, writes, or erases data on a
storage medium; for example, a small electromagnet
used to read, write, or erase data on a magnetic disk.
interface. A device that alters or converts actual
electrical signals between distinct devices, programs, or
systems.
joystick. In computer graphics, a lever that can pivot in
all directions and that is used as a locator device.
Kb. Kilobyte; 1024 bytes.
load. In programming, to enter data into storage or
working registers.
magnetic disk. (1) A flat circular plate with a
magnetizable surface layer on which data can be stored
/""""...
by magnetic recording. (2) See also diskette.
Mb. Megabyte; 1,048,576 bytes.
microprocessor. An integrated circuit that accepts
coded instructions for execution; the instructions may
be entered, integrated, or stored internally.
modem (modulator-demodulator). A device that
converts serial (bit by bit) digital signals from a
business machine (or data communication equipment)
to analog signals that are suitable for transmission in a
telephone network. The inverse function is also
performed by the modem on reception of analog
signals.
Glossary-4
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