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Radio Shack TRS-80 PC-3

Radio Shack TRS-80 PC-3
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BUSY
P
DEF
DEGRAD
(
~~%
)
GRAD
SHIFT
E
The cursor. This
symbol
(the underline) tells
you
the
location
of
the
next
character
to
be
typed
in.
As
you
begin
typing,
the
cursor
replaces
the
prompt.
The
cursor
is
also used
to
position
the
computer
over
certain
characters
when
using
the
INSert
and
DELete
functions.
Program
Execution
Indicator. When
the
PC-3
is
executing
a
program,
this
indicator
is
lit
(except
when
characters are
displayed).
The
PC-3 will
not
undergo AUTO
OFF
while
the
BUSY indicator
is
on.
BUSY disappears
from
the
display
when
execution
is
completed.
Printer Indicator. This
indicator
appears whenever
you
elect
the
print
option
when
using
the
PC-3 as a calculator.
Definable Mode
Indicator.
This
symbol
lights
up
whenever
you
press
the
DEF key.
Angular
Measurement
Indicator.
This
indicator
displays
the
current
unit
of
angles
for
the
input
of
trigonometric
functions.
Depending
on
the
mode
in
use,
the
display will read DEG (degrees), RAD (radians),
or
GRAD
(gradients).
Shift
Key
Indicator.
This
indicator
lights up
when
the
(SHIFT) key has been depressed.
Remember,
the
(SHIFT) key
must
be released
before
depressing
any
other
key.
Error
Indicator.
Whenever an
error
is
encountered,
this
indicator
is
displayed.
16

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