A multiplexer chip capable of multiplexing any number of input sets of any size. Number of outputs determine the bit-size.
For example, to build a 4 bit multiplexer that can select one input out of 3 you would need 2 select inputs, and 3 input sets of 4 pins each. When the select pins value changes a new input set is sent to the chip outputs.
on Wikipedia
multiplexer
<input sets count>
(NOT optional)Version history: Added to BasicCircuits 0.1