16
2-1
Let's
Operate
the
Computer
Try the computer and
see
how it works.
First slide the power switch to
ON, and the following display
will
appear.
[
;:~
'
""'
~
-
r::
e
.3
(j
y p e
First erase this display. To do so, press the
~key.
"Ready PO" will vanish. Then
"....:'
will begin blinking at the left end. This
is
called the "cursor" and indicates
the starting point for character writing.
RUN
DEG
l
The state
in
which this cursor
is
blinking
is
called "key-input waiting state", -
namely, the blinking cursor indicates that the computer
is
waiting for a calcula-
tion or a command. The cursor
is
usually indicated by a blinking "_.!',
but
as
characters are written continuously, it sometimes changes to a blinking " I
".
On
this computer one line consists
of
up to 62 characters. The " I " symbol
appears
as
a warning signal when the number
of
written characters exceeds 5
5.
"BUZZER", "RUN" and "DEG" will probably appear at the top
of
the display.
These are called mode displays and indicate the state
of
the computer. "RUN"
indicates the RUN mode in which manual calculations and program execution
can be performed.
"BUZZER" shows that the buzzer
is
on. The buzzer
br-eps
at
each key input.
"DEG" shows that the angle unit
is
the degree. In addition,
other angle units are the radians
("RAD" lights up), which
is
specified by press-
ing
~~
, and the grads ("GRA" lights up) specified by pressing
~[§]
.
Be
careful about these angle units when handling a trigonometric function, inverse
trigonometric function or coordinate transformation.
Once
an
angle unit
is
specified, H remains in effect even when power
is
switched off.
The other modes displayed are the program writing mode
("WRT" lights up)
specified by pressing
~IIJ
, the trace mode ("TRACE ON" lights up, see page
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