Input Shift Registers

This small key pad like circuit with an input shift register (74HC597) is a test circuit for input shift register. The shift register is parallel in and serial out register. The serial part is handle by the micro controller. For this test my friend wh0kn0wz was helping with bug in micro controller code. Thanks to him for identifying it. :P
This shift register can be used in key pads and other multiple controllers.
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