A
ll
and more about Sharp PC-1500
at
http://www.PC-1500.info
3)
Special Characters -
The
$ (dollar sign)
and
t
he
, (comma) have special meanings in BASIC
and may
not
occur as part
of
a number with[n a calculation.
4)
Negative Numbers - .are denoted
by
prcccedin9
the
number
with a - (minus sign) as, for
example:
-5
+ 2 = > - 3
5) Compound Calculations - follow common .algebraic laws. Parentheses are used
to
indicate the
correct meaning
of
a given expression. Complete information on the order
of
cxp
rcs.sion
eva
luation
is
given in Appendix 0.
61
Inequalities - Inequalities using
the
sYmbols <.
>.
<=. >=. and < > (for less than,
greater
than
..
less
than
or
equal
to
. greater
than
or
equal
to,
and
not
equa
l t
o)
will return 0 for
FALSE and 1 for TRUE.
7)
Left Arrow key - The L
eft
Arrow key G acts as a non-destructive cursor backspace. Hold-
ing th
is
key will
cause
automatic
te
pctition.
Th
e Underline cu
rsor
changes
to
a Fla
sh
ing
grid
when
placed over a previously
ty
ped character. Pressing
SHI
FT
followed
by
the
Left Arrow
key
invoke~
t
he
DE
Lete function, which
deletes
the
cha
racter
on
wh
i
ch
the
cursor
is
posi-
tioned.
8) Right Arrow key -
The
R
ig
ht
Arrow k
ey
moves
the
cursor forward non-destr
uc
tively. Holding
this key
down
will cause automatic repetition. The sequence SHIFT, Right Arrow wi
ll
invoke
the INSert
func
tion; inserting a "place holder" character at the current cursor position. This
character can then be overv1ritten
\"lith
the i
nfo,mation
to
be inserted.
9) Recall function - After ENTER
is
pressed, and
the
result
of
a calculation
is
displayed, the
original
equation
may be recalled
by
pressi'ng either
the
Left
Arrow
or
the
Right Arrow key.
At
this poin
t,
changes may be made and
the
modified equation re-entered.
The
Recall function
will also
work
for
any non-programmed expression which produces an error. In this
case,
the
cursor will
l>e
positioned
at
the
point
of
error
detection.
10) The Use
of
Variables in the RUN mode gmatly increases
the
PC-1500's
compu
ting power and
provides brevity in complex expressions.
11) Assignme
nt
.Statement. using
the
forms:
variable-name = expression
character·var
iable-na
me =
"ch
aracters"
allow
the
storage
of
a single number
or
a string
of
up
to
16
characters. respectively, Any
printable
character
may be used within the string
except
a
doub
le
quote.
12) Variable Names for numeric variables arc:
1. A l
etter
(A through Z)
2.
A l
etter
followed
by
a digit
(0
through 9)
or
another
letter.
Character variable names follow
the
same rules with
the
addition
of
the
S (dollar
sign}
as a
suffix
to
all names.
13) Exceptions -
The
following are exception.s
to
the naming scheme and may
not
be used as
variable
names: IF, LF, LN, Pl, TO,
IFS
,
LF$,
LN$,
Pl$,
TO$.
14) Life-span
of
Information - Information within variables is retained until:
1) A CLEAR
or
NEW
commad
is
given.
2) A program
is
r
un
using
the
RUN
commarnd.
3) Another Assignment
statement
is
executed for the same variable.
4)
The
com
puter's
batteries are changed.
Turning
the
computer
off
doe
s
not
affect values stored in variables.
25
Do
not sale this PDF
!!!
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