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Low Cost Keyboard Scanner Disclosure Number: IPCOM000045642D
Original Publication Date: 1983-Apr-01
Included in the Prior Art Database: 2005-Feb-07

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Jeanniot, P Vautier, R [+details]


Recent keyboard developments have brought about low-cost devices where the cost-reduction efforts were directed at the mechanical features. However, to realize full cost reduction, the interface circuits and logic control should be give the same attention. This article proposes a simple way to achieve logic control of a matrix-type keyboard.