Demultiplexer
The demultiplexer together with a multiplexer and the 4-bit adder will be used to build an integrated adder/subtractor. This means that we can choose with a control bit whether our devices does act as an adder or subtractor.
Assignment
In the video I am building an integrated 4-bit adder/subtractor. Your job for Assignment 2.4 is to build analogously an integrated 8-bit adder/subtractor. Hand-in a link to your project.