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Keypad with 16 keys 4 x 4Linked to four lines on four columnsThus requires only 8 I/O linesFor micro-controller and Single Board ComputerThis...read more
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Keypad with 16 keys 4 x 4Linked to four lines on four columnsThus requires only 8 I/O linesFor micro-controller and Single Board ComputerThis text is machine translated.