Darkroom computer - a microprocessor processor

9-30 — elektor september 1982 darkroom computer part 1 darkroom computer The darkroom computer described here is capable of dealing with virtually everything in the darkroom as far as measurement and control is con- cerned. It is an ex- posure several mounted on a separate printed circuit board and there are a total of seven boards in all: • The processor board. A small 6502 system that forms the heart of the circuit. • The display board. Obviously LED-displays are necessary for the darkroom. The keyboard. A capacitive keyboard especially designed for this appli- timer, a dual process timer, temperature meter, photometer and contrast meter. The darkroom computer is based on the well-known 6502 micro- processor and a capacitive key- board designed specifically for this application. Construction is relatively easy while overall cost is far less than the equivalent commercial systems. PART 1 a microprocessor processor The timing of publication of this article is no accident and...