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Sharp PC-1403 - Page 86

Sharp PC-1403
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8 0
Si
mp
le
Vari
a
bles
Si
mple
va
r
i
able
na
m
es a
r
e
s
pe
cifie
d
b
y two or more
a
l
p
han
um
e
r
ic
c
h
arac
t
e
r
s
,
s
u
ch as
AA or
8
1
.
Unl
i
ke
f
ixe
d
va
riabl
es
,
s
imp
l
e
va
ria
bl
es have
n
o
d
ed
icat
e
d
stor
age area in
the
mem
o
ry
.
Th
e a
r
ea for
sim
p
l
e
var
ia
b
l
es
i
s
aut
o
ma
t
i
cally set
as
id
e
(
w
i
t
h
i
n
t
he
program and da
t
a
area
)
w
h
en a simple
v
a
riabl
e
i
s
fi
rst
u
se
d
.
S
in
ce
se
p
arate
me
m
ory
a
r
eas are
de
fin
ed
f
o
r
si
m
ple n
umer
i
c
va
ri
ables and
s
imple
c
h
ar
a
cte
r
v
a
r
ia
bl
es e
v
en if
t
hey
h
ave
t
h
e
sam
e
na
me
,
var
i
a
b
les
s
u
c
h as AB
a
nd
AB
$,
f
o
r
examp
l
e,
m
ay be
u
se
d at
th
e
sa
m
e
t
i
me
.
Wh
ereas
al
ph
a
nu
mer
i
c
characte
r
s are
usa
b
l
e
fo
r
s
imple
var
i
ab
l
e
na
m
es,
th
e
fi
rs
t
c
h
a
r
ac
t
er of a
v
a
ri
a
ble
n
am
e must
alw
a
y
s be
alph
a
betic
a
nd
uppe
rcase
.
If
m
or
e
t
h
an
two
c
h
ara
c
ters are
u
s
ed to
d
ef
in
e a
va
ri
a
ble
n
ame,
on
l
y
th
e
fi
rst
t
wo
c
h
a
racte
r
s a
r
e
m
eani
ngful.
A
=A
$ =
A
(
1
)
=
A
$(
1
)
B
=
8
$
=
A
(2)
·
=
A
$
{2)
c
=
C
$
=
A
(
3
)
=
A
$(3)
D
=
0
$
=
A
(4)
=
A
$(4)
E
=
E$
=
A
(5)
=
A
$(5)
F =
F
$
=
A
{6)
=
A
$(6)
G = G$
=
A
(7
)
=
A
$
(
7)
H
=
H
$
=
A
(
8
) =
A$(8)
=
1
$
=
A
(
9
)
=
A
$(9)
J
=
J
$
=
A
(
1
0)
=
A
$(10)
K
=
K
$
=
A(11
)
=
A
$
(
11)
L
=
L
$
=
A
(
12)
=
A
$
(
12)
M
=
M
$
=
A
(
1
3)
=
A$(
1
3)
N
=
N
$
=
A
(
14
)
=
A$
(
1
4)
0
=
0
$
=
A
(
1
5)"
=
A
$(15)
p
P$
=
A
(1
6
)
=
A
$(
1
6)
Q
=
0
$
=
A
(1
7
)
=
A
$
(
1
7
}
R
=
R$
=
A
(1
8
)
=
A$
(
18
)
s
=
S
$
=
A
(1
9
)
=
A$
(19
)
T
=
T
$
= A(20)
=
A
$
(
2
0)
u
=
U
$
=
A
(2
1
)
=
A
$(2
1
)
V
=
V
$
=
A
(2
2
)
=
A
$(22)
W
=
W$
=
A
(
23
)
=
A$
(23
}
x
=
X
$
=
A
(2
4
)
=
A$
(2
4
)
y =
Y$
=
A
(2
5
)
=
A$(25
)
Z
=
Z$
=
A
(2
6
)
=
A
$(2
6
)
Concepts and Terms of BASIC
A
ga
in
,
t
he
co
m
pu
te
r
is
c
o
nf
u
sed and
g
i
ves
t
he ERROR 9
m
ess
a
ge
.
Look at
t
he
fig
ure
s
h
own
be
l
ow
t
o
se
e
th
a
t
t
h
e
vari
able
n
a
m
e A
equ
a
l
s
t
h
e
sa
m
e a
r
ea
i
n
me
mory
a
s
t
he
variab
l
e name
A
$
,
and
tha
t
B eq
ual
s
8
$, and
s
o on
fo
r all
t
he
l
ett
ers of
t
h
e
a
lph
abet'.
Fi
g
ure
:

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