Digital Equipment VAXstation 2000 Owner's Manual page 127

bitmap graphics
The type of graphics supported by the VAXstation 2000. Bitmap graphics are
defined by the workstation software and can individually set the shade of
gray (or color) of each picture element (pixel) on the screen.
boot
See bootstrap.
bootable medium
Afixed disk, diskette, or magnetic tape cartridge containing software (such as
an operating system) a bootstrap program can load into the system memory
and execute.
boot device
The device that is booted at system startup. (See bootstrap and device.)
bootstrap (or boot)
To execute the bootstrap loader program, a program that is always resident
in the system when the power is on. In the VAXstation 2000, this happens
automatically whenever system power is turned on. The bootstrap loader
loads the operating system software from a mass storage device and executes
it. A bootstrap program. ^ ^
byte
Agroup of eight binary digits (bits). Abyte is one-quarter of a VAX system
word.
central processing unit (CPU)
The part of the system that controls the interpretation and execution of
instructions. In the VAXstation 2000, CPU functions are contained on one
MicroVAX II CPU chip.
cluster
Agroup of computers networked together that share disk storage, application
programs, and other computer resources.
communications
Acable along which electrical signals are transmitted. Devices or systems that
are connected by a communications line can share information and resources. ^
computer system
A combination of system hardware, software, and external devices that
performs operations and tasks.
Glossary-2