The 4x4 Key Click Board™ carries a 16 button keypad. The design of the board — inputs are read by a pair of connected 8-bit parallel in serial-out shift registers — allows for multiple key presses at the same time.
The 4x4 Key Click Board™ carries a 16 button keypad. The design of the board — inputs are read by a pair of connected 8-bit parallel in serial-out shift registers — allows for multiple key presses at the same time.