A
ll
and more about Sharp
PC
-1
500
at
http://www.PC-1500.info
II.
TAKING
THE PLUNGE
...
Actually,
th
i
is
chapter
is
probably misnamed; learning
to
use
the
PC·
1500
is
no
t nearly
as
shocking
as
plunging into a pool
of
i.voter.
Ho
·wevcr,
it
does require
that
you approach the com·
puter without fear.
As
we
have said before,
you
cannot hurt or damage the computer merely
by
pressing
the
keys.
In
this chapt
er
we
will
explo
re
the
fundamental features
of
SHARP
upon
which
programs
and
more advanced calculations are based. Take t
he
time necessary to work through the exan1ples in
each
section. A good understanding
of
the
basics
\Viii allow you
to
exploit this
mach
ine's full
potential.
Although
we
do
not
recommend
it,
if you feel
that
you are sufficiently advanced, you
may
skip ahead
to th
e summary
at
the
end
of
this
chapter.
A.
MODE
Let's begin
with
a key
we
have been ignoring until now.
At
the right
of
the
key
board find the
very impor
tant
button
labelled MODE. Press i't repeatedly. Notice, each tim&
you
press
the
key,
the ch
anges
in the abbreviations
at
the upper right. Changing the machine's mode in this
w(1y
ca
n
be
likened
(O
shifting
gea
rs on a car.
As
each
nei...,
.rnode or gear is
engaged
, machinery which
appears
outwardly
unchanged
pe
rforms differently. Like a car, SHARP
must
be
placed in the
proper mode
to
function according to plan.
And,
also
like a car, when you
attempt
to operate
SHARP in
an
i
mproper
"gear".
the computer will quickly
no
tify you
of
your
mistake.
By
repeatedly pressing
the
MODE
button
you
will be introduced
to
the two
most
important
of
SHARP's three modes: RUN and PROgram. A third mode, RESERVE,
is
activated
by
pressing
the
SHIFT
key
be
fore
the
MOOE key, Later .chapters
of
this manual wi
ll
describe
how
each of
these modes
contributes
to
the
smooth
r
unning
of
SHARP.
For
now,
rememb
er
th
at
in order
to
use SHARP as a calculator. you mu
st
be
in
the
RUN mode. Later, in
the
PROgram mode,
you
will write and change programs. With the RESERVE
mode
you can assign frequently used
commands
to
a siogle key.
Th
is is
explained in
greater
detail in
Chapter
7.
Note
that
the
first time you turn the computer
on
after inserti
ng
batteries,
it
will set
tl
e into
the PRO mode_
At
other
times
the
computer wi
ll
com
e
on
in the mode in
which
it last
operated
before being
shut
off.
B.
SIMPLE CALCULATIONS
With SHARP set in
the
RUN mode, let's
test
fundamental mathematical
computat
ions.
It
is
necessary
before each calculation
to
press
I
CL
I . This clears tho display of any previous data
which might interfere
with
a new calc
ulat
i
on.
Find
answers
to
the
fo
ll
owing simple problems;
I
np
ut
Display
mrnm
1
'"
""'
7
m G
rn
l•
•TE•
I
3
!Il
f/l
!Il
I
fNT
£Al
2.
5
mrnm
!
l!HTEJtl
1 0
_NOTE:
Do
not
type
an
equ~I
sign, R
emember
frQrn
Chapter I
that
it
is
the
fNTER
key
which
informs
SHARP
that
you have finished
typing
and
wish
to
have
your
command
or calculation
performed.
15
Do
not sale this PDF
!!!
To Next Page
Loading...
