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The Digital Contrast Adjustment Board.
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The board consists of a DS1809-010 I.C. From Dallas Semiconductor.
2. Momentary, Normally open push button switches.
1. Schottky Diode
1. 10 microfarad 50V Electrolytic Capacitor.
1. 10000 ohm (10K ohm) 1/8 Watt carbon film resistor.
This takes the place of the 5K slide resistor (Pot) on the LCD board
labeled as R7
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Pc board with items on it. Click for larger view
Pc board showing traces. Click for larger view

Last Updated on 4/28/2004
By Len Averyt
Email: Techknowman@techknowman.com