Practical Applications of Muxers

$n \times k$ crossbar switch

n inputs, k outputs, connect any input to any output

FPGA

Pass Transistors

• Transistors that are switched on or off

• disadvantage - corrupted memory can cause 2 transistors to drive the same line

• disadvantage - memory cell requires 6 internal transistors

• scalability issues

Multiplexers

• Only need $log(n)$ storage cells

Simplified Logic Functions