Matrix Keypad, 4x4

Pushbutton-style 16-key keypad 8-pin connector (0.025" square pins) easy pin connections for breadboard, ribbon cable, etc. corner mounting holes compatible with #2 mounting hardware (not included) currently shipping black keypad (not white)   This keypad has the connector on the rear, along the bottom edge, as shown in the photos. It consists of a single strip of eight square pins, on 0.1-inch centers. Here are some ideas for making connections: - wire-wrapping - plug into a solderless breadboard - plug into one half of a 16-pin DIP socket - plug one row of a 16-pin ribbon cable over the pins and the other end to pins in your project board A rough schematic of the keypad can be found here, showing the row and column pinouts: http://support.technologicalarts.com/docs/Components/MK4X4.pdf