Chapter 5

Keypad Scanning

There are numerous applications using a keypad in an electronic circuit to enter data or make a choice from a number of selections. In such circuits as:

ent Door entry systems

ent Scoreboards, darts, snooker, cricket

ent Burglar alarms

ent Program selection as in a washing machine

 Remote controls

 Calculators

Recapping the if statement. ...

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