Re: Please Help me Somebody with DEMUX Gate

Posted by WBahn on Jun 17, 2019; 5:10pm
URL: http://nand2tetris-questions-and-answers-forum.52.s1.nabble.com/Please-Help-me-Somebody-with-DEMUX-Gate-tp4033175p4033302.html

Connecting a physical keyboard and display is not nearly as simple as just connecting the pins to points in your existing circuit.

You need to look up and understand the protocols for interfacing to each. It depends very much on the type of interface, too. Is it a USB keyboard? A PS/2 keyboard? It is a VGA monitor? An HDMI connector?

Once you understand the protocol, you need to design a circuit that implements that protocol and that has two sides to it -- the side that the device is on and the side that your CPU memory is on.

It's not a trivial undertaking -- but it can be a very rewarding journey.