IBM 6360 User Manual

Figure 3-3. Operator Controls
Character Structure
The CRT forms character images with
combinations of dots on the display
screen. The dots are made by a pulsed
electronic beam which moves across the
screen. The display adapter card,
located in the electronics module
determines which dots are to be cre-
ated as the beam moves from left to
right, and from top to bottom on the
screen.
The screen contains 640 columns and
400 rows of dots. Each dot is 0.32 mm
by 0.34 mm (0.126 - 0.133 inches) and
the screen is divided into 8 x 16 dot
areas known as character boxes.
Inside each character box is a dot
matrix where this character is formed
(Figure 3-4).
The display adapter card controls
which dots are lighted in a character
box. For example, the underscore is
produced by the display adapter card
turning on all the dots in row D of a
character box (Figure 3-5).
I I
,
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Characters
IDot Matrix/
I
I
/
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Lower Case
i,
1
/
3
x
9
I
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Number 0, 1
I
5 x 9
I
I
Upper Case
I
I
.5
x 9
I
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Lower
Case
b, d,
f,
I
6
x
9
I
I
h,
k,
t
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Upper Case A, B, C,
I
6 x 9
I
I
D, E, F,
H, K, L, M,
I I
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N, 0, P,
R, S, U, V,
I I
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X, w
I I
I
Numbers
2, 3, 5,
I
6 x 9
I
I
6,
7,
8, 9
I I
I
Upper Case
G,
J,
Q,
I
7
x 9
I
I
T,
Y,
Z
I
I
I
Number
4
I
7
x 9
/
I
Lower Case a, c, e,
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I
n, 0, s, v, w, x, z
I I
I
Lower Case
g, p, r,
I
6
x 7
I
I
y
I I
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Lower Case
j
I
4 x
10
I
I
Lower
Case
nt, u
I
7
x 6
I
I
Lower
Case
q
I
.7
x
7
I
I I I
Figure 3-4. Character Size
The cursor is a row of dots qn the
screen usually indicating where the
next character will be entered. It is
produced by the display adapter card
lighting all of the dots in row E of
the character box. The cursor is
always a brighter intensity, and when
the cursor is below a character, both
the character and the cursor will be
brighter (Figure 3-5).
When using superscripts (one-half
index up) or subscripts (one-half
index down), the displayed character
is moved up or down by three dots
(Figure 3-6). The display supports
one level of half indexing.
3-2 IBM Displaywriter Product Support Manual

IBM 6360 Specifications

General

Brand	IBM
Model	6360
Category	Desktop
Language	English