2x16 LCD And 4x4 Keypad Interfacing With 8051 in Assembly Language | bOtskOOl

The connections are similar as shown over here. Now consider this, if I select the first column only, it has 4 keys, 1, 5,9,13. If a change of value (i.e. Binary 1 or 0) is made any one of these keys, it can be decoded and suitable message is displayed on

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