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1.5.3 Screen Editor
Any program lines or data included on the virtual screen can be edited. First the
portion of the program or data is brought onto the actual screen, and then the cursor
is located at the position to be edited
1.5.4 Display Contrast
The display may appear dark or dim depending upon the strength of the batteries or
the viewing angle. The contrast of the display can be adjusted to the desired level by
rotating the control dial down darkens the display, while rotating it up lightens the
display.
A weak display when contrast is set to high level indicates weakened batteries, and
batteries should be replaced as soon as possible.
1.6 Display Characters
The relationship between characters and character codes is illustrated in the
following table.
Character Code Table
High-order digit
0
0
HEX
0
0
1
1
2
2
LINE
TOP
3
3
4
4
SHIFT
RELEASE
5
5
LINE
CANCEL
6
6
LINE
END
7
7
BEL
8
8
BS
9
9
CAPS
L-U
10
A
LF
11
B
HOME
12
C
CLS
13
D
CR
14
E
SHIFT
SET
15
F
CAPS
U-L
16
32
48
64
1
2
3
4
SPC
0 @ P
DEL
1
A
INS
"
2
B
#
3
C
4
D
5
E
&
6
F
'
7
G W g
(
8
H
)
9
I
*
:
J
+
;
K
,
<
L
-
= M
.
>
/
?
CONTRAST
80
96
112
128
144
5
6
7
8
9
`
p
Ä
0
Q
a
q
∫
1
R
b
r
√
2
S
c
s
´
3
T
d
t
∑
4
U
e
u
Ω
5
V
f
v
6
w
7
X
h
x
8
Y
i
y
9
Z
j
z
+
[
k
{
-
¥
l
|
n
]
m
}
x
^
n
~
-1
_
o
12
160
176
192
208
A
B
C
D
SPC
-
°
`
.
¨
°
224
240
E
F
≥
≤
±
π
£
¢
±
o
∆
\
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