This is a guest post by Olger Groen. If you would like to write for ExtremeCircuits, then drop us an email via contact form or simply comment. A long time ago when a parallel printer port was the ...

In the late 1930s, Claude Shannon showed that by using switches that close for "true" and open for "false," it was possible to carry out logical operations by assigning the number 1 to "true" and 0 ...