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Boot:
This
is the initialization
program that
"
sets
up"
the
com-
puter
when it is
powered up
.
At conctusion of the boot (or
after
"
booting
up" ),
the
computer
is capable
of
loading and executing
higher-level
programs.
Break:
To
interrupt execution
of
a
program
.
Pressing
the
!
Breel<
I
key causes a
break in
execution
.
Buffer: A temporary storage area in
RAM used
to hold data
for
further
processing
,
input/output operations
,
and the like
.
Byte:
Eight bits. A
byte
can represent one character. A byte
has
a range of
0 through
255 (decimal).
CIO:
Central
Input/Output
Subsystem. The part of the operating
system (OS) that
handles
input/output.
CLOSE:
To terminate
access to a disk
file.
Before
you can han-
dle
further
access to the
file,
it
must
be
opened
again
.
See
OPEN.
Data:
Information of any kind
,
usually a set of
bytes.
Debug
:
To
isolate and
elim
inate errors from a program
.
Decimal
: Also
known
as base
10.
A number base system using
the
digits 0
through 9.
Decimal
numbers are stored in binary-
coded
decimal format in the
computer.
See
Bit,
Hexadecimal
,
and Octal.
Default:
A condition or value that
exists
or is
caused
to exist by
the computer until
it
is told to do something
else.
For
example,
in
BASIC the
computer
defaults to GRAPHICS 0 until another
graphics mode
is
entered
.
Delimiter
:
A
character
that
marks the start
or
finish
of
a
data
item
but is not part
of
the data.
For
example
,
BASIC
uses quota-
tion marks
(")
to delimit strings.
Density:
The
closeness of space distribution on a storage me-
dium,
i.e
.. the number of sectors per track. Both single and en-
hanced density
record
128
bytes per
sector.
Destination:
The
device or address that receives data during
an exchange
of
information
(especially
an
1/0
exchange)
.
See
Source.
Directory
: A
summary
of files
contained
on
a diskette listed by
filename and file
size.
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