Star Tech Journal

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The segments of each display digit correspond electrically to CATHODES; that is, they require a NEGATIVE drive voltage for
operation, and each display digit connection (which are CLEAR conductors deposited on the TOP glass of the display sandwich) can
be thought of as the ANODE, driven by a POSITIVE drive signal. These drive voltages are typically on the order of +90v DC for the
digits (Anodes) and -700v DC for segments (Cathodes).
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16-Digit (14 Segment) Alphanumeric Display
Each Segment Drive is shown lit below in each Digit (Character) for demonstration of the segment position within the Digit.
Digit 16 Digit 15 Digit 14 Digit 13 Digit 12 Digit 11 Digit 10 Digit 9
Digit 8
Digit 7 Digit 6
Digit 5
Digit 4
Digit 3 Digit 2
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Segment Segment Segment Segment Segment Segment Segment Segment Segment Segment Segment Segment Segment Segment Segment Segment
Comma Dec. Point
R
P
N
M
K
J
H
G
F
E
D
These Pins
(shown blue)
are the
DIGIT
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DRIVES;~
This is the
Anode side,
which is
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POSITIVE.
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A
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These Pins
(shown white)
are the
SEGMENT
DRIVES;~ Pin Pin Pin Pin Pin Pin
88 86 84 83 82 80
This is the
G N E R P
Cathode side,
comma
which is
(Digits4-16)
NEGATIVE.
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Digit 1
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Note: The "Short" Pins shown are cut and Not Used.
Pin Pin Pin Pin Pin Pin Pin Pin Pin Pin Pin
20 18 16 12 1 0 9 8 6 4 3 2
D
C M F H K B J A
decimal
decimal
point
point
(Digits 4-16) (Digits 2 & 3)
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