Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
It takes 1 level of sort to exchange the inputs by one position, such as from A to B. It takes 3 levels of sort to exchange the inputs 3 positions, such as from A to D. Each level except the last needs 2 units because of the 4 inputs. The last needs only one unit because only 2 inputs need to be sorted. That totals 5 units minimum.
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