The Open 7400 Logic Competition has brought awareness to open hardware and software, and fosters understanding of the building blocks of modern integrated circuits. What can you build with basic logic chips?
7400 Logic Competition winners are announced According to competition results page all the entries were amazing! There are quite a few of them. Many of them look like something worth to check out. So check them out.
A 7400 series calculator was awarded the reader’s choice. It can calculate upto 5-Bit signed data with the addition and subtraction operation with a facility to clear answer and the input as well. Here is a video that demonstrated it’s operation.