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Membrane Keypads: As electric-electronic controls became more affordable, membrane keypads set the industry standard for human interface.

Many factors contributed to membrane keypads popularity among designers like: Reliability, Low cost compared to competing interfacing solutions, Design Flexibility, Convenience to integrate with LED and LCD displays, Environment resistance (dust and moisture).

Nowadays we all became used to see them on many house-hold appliances like: microwave ovens and dish washers. But it is on the Industrial and Medical applications where the membrane keypads are put to their limits from Hospitals to Oil-Rigs.

As in any other device reliability and performance of a membrane keypad relies on its proper design and construction, because using the