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When a key is pressed, a debounce logic comes into operation in

When a key is pressed, a debounce logic comes into operation in Correct Answer scanned keyboard mode with 2 key lockout

In scanned keyboard mode with 2 key lockout mode of operation, when a key is pressed, a debounce logic comes into operation. During the next two scans, other keys are checked for closure and if no other key is pressed then the first pressed key is identified.

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