Radio Shack TRS-80 100 Manual page 37

Radio
/hack
Computer
Training
Programs
compressed-format
A
method
of storing information
in
less
space than a standard
ASCII
representation
would
require.
BASIC
programs
in
RAM
and non-ASCII
disk
files
are stored
in
compressed-format.
close
Terminate access
to
a
file.
Before re-accessing the
file,
you must
re-open
it.
CPU
Central
Processing
Unit.
Often
referred
to
as the "brain"
of
the
microcomputer.
debug To
find
and remove
logical
or syntactic errors
from a program.
decimal Capable
of
assuming one
of
ten states,
e.g.,
the
decimal
digits 0,1 9.
Decimal
(base
10)
numbering
is
the
everyday system. Decimal
numbers
are stored
in
binary
code
in
Model
II
BASIC.
default
An
action or
value which
is
supplied by a
program
when
you do
not specify
an
action or
value
to
be
used.
destination
The
device
or
address which
receives the
data during a data transfer
operation.
For
example,
during
a copy operation, the destination
file is
the
one
into
which
the
source
file is
being copied.
directory
A
listing
of
the
files
which are contained
in
memory.
download
Allows the
storing of
information
from another
computer
or
host
system
into
the
memory
of
the receiving
computer.
edit
To change
existing information.
file
An
organized
collection of related data.
BASIC
programs and
data are stored
in
distinct
files.
filename
The "name"
given
to
a
program
or
data
file
at
the time
of
creation
which
is
used
to "call"
the
file.
The
filename
must
begin
with
a
letter
and
may
contain
up
to five additional
characters.
It
may
also include
an
extension
which
identifies
the
file
type.
hexadecimal
or
hex Capable
of existing
in
one
of
sixteen possible
states.
For example,
the
hexadecimal
digits
are
0,1,2.
.
.,9,A,B,C,D,E,F.
In
Model
II
BASIC,
the
hexadecimal
constants
can be
input
by
prefixing
the constant
with
&H.
host
system
A
centralized
computer system which
performs applications processing,
accessing
of
bulk
memory, and
storing
data bases,
and
is
attached
by a communications
network
to
other
computers.
input
To
transfer
data from outside
the
computer
(from disk
file,
keyboard,
etc.) into
RAM.
-
—
kilobyte o
r
K
1024
bytes
of
memory. Thus
a
64K
system
includes
64*1024
=
65536
bytes
k
of
memory
-
"'
35
TDQ
..fSinft