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All
and
more
about Sharp PC-1500
at
http://www.PC-1500.info
F.
THE
DISPLAY
Press
ON. The "glass w
indow"
part
of
the
computer
is
called
the
"display."
It
looks something
like
this:
OCG
•••
·.
:·
•'
On the
d isplay
you
should
see an
)
(called a
"
prompt"),
several
words or
a
bb reviations,
~nd
a dot {indicating
that
the
battery
is functioning).
Do
not be
concerned
if
the
specific
abbre-via·
tions
appeari
ng on youl'
display
are
not those
of
our illustration.
These
symbols
change
as vou
operate SHARP.
G.
The
CURSOR
and
the
PROMPT
At the far left of the
display, find
t
he p
rompt
symbol
(>I;
it
p rompts you
to talk
to SHA
RP.
When the
"prompt"
appears
it
means SHARP
has
no
immed
'
i
ate
plans
and
awaits your
bidd
ing,
Type a
letter of
your choice.
It
replaces
>
at
the
left of
the
display.
while
to
the right of your
letter
appears
a
_
(underl
ine symbol).
This
is a curso
r.
As
you
press
each
key,
the
cursor
inches
its
way
across the
d
isplay,
ind
icating
where the next symbol you
type
will appear.
Type
your name
and
no
te t
he
movement
of the
.;;ursor.
If
you
type
more than
25 characters,
the limit
that
can be
clisplayed at
one
time
the
entire
'line
shifts
left.
(Try
it!).
Characters "pUshed
off" the
screen are
not lost:
they
remain
in
SHARP
as
part
of the
typed
line,
up
to a maximu
m
of
80
characters for any single line.
We will see
how
to " recall"
and
ho\Y
to
change
these characters in
a
later
section.
H.
CLEAR
(The
red
@
key in
the upper
right
corner}
Push
this button
and
you Clear the d
isplay
of
its
contents. Use
it
to erase
the charaC'tcrs
that
you just
typed
in.
Notice that
the
p ro mpt
has returned, indicating
that
the
computer is
again
w
aiti
ng
for
your
commands.
The
clear
key
is
also used
to cancel
an
incorrect
command.
(Sec
the section on Error messages
below).
I. ENTER
As
you type
into
the computer,
the
let1crs
or
numbers
appear o
n
th•
d
isplay. SHARP
w
ill
take
NO ACTION,
however,
until you si9nal
that
you have
finished
typin9
{after all, it c;in't read you
r
mind). This
is
done by pressing
t
he ENTE
R
key after your
other k
eystrokes.
At this point,
the
computer will scan
the characters
you
have
typed for correct form.
Ce rtain e
rrors,
but
by
no
means all errors,
will
cause
your
input to
be
rejected
.
REMEMBER:
Press
the
l••T••I
key each
time
you
wish
to enter
an
instruction
or
item of
data
into
the
machine.
J. ERROR
MESSAGES
Press
the following keys:
o:JIIJOJ
I
=
I
Now
press
I
ENTER
I.
The
answer
should
be
displ ayed.
Th
ree,
right?
No
?
You get
"ERROR 1"
as
your
answer?
Is
your
compUter
defective? Never!
There's a mistake in the
form of
the
command.
"ER ROR
Do not sale this PDF
!!!
13
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