Chapter 4: Glossary - HP 9000 300 Series Installation Reference

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Glossary
Bit: A binary digit (1 or 0).
Boot ROM: The boot ROM stores instructions that tell the computer how to search for
a system program. They basically keep the computer running until a system program
can take over.
Byte: The unit of memory used on your computer. One byte equals eight bits and is
generally equivalent to one character, like "A".
Character Code: A numeric code which is used to represent a character inside the
computer.
CRT: The computer's screen (cathode ray tube).
Cursor: The blinking underline character that marks the position on the screen where
the next character will be typed.
Disk: Similar to a phonograph record, except that it stores programs and data instead
of music.
Disk Drive: An input/output device that transfers programs and data between a disk
and the computer's memory.
Hardware: All of the electrical and mechanical components of the computer.
K bytes: 1024 bytes.
Language System: A large program which performs all of the functions of a system
program, plus supports a programming language like BASIC or Pascal.
Language-dependent Program: A program which requires a language system in order
to run. Language-dependent programs are always loaded into memory after a language
system has been booted.
M bytes: 1048576 bytes.
Glossary
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