The basic ingredient of adder circuits is a pair of logic gates, working in parallel, called a half adder, which can do sums no more complex than (wait for it!) 1 + 1 = 2. One example of a half adder looks like this: You feed in two binary numbers you want to add on the ...
Adder (electronics): This more detailed (and less clear) article from Wikipedia explains how different logic gates can be used to add numbers in circuits called half adders, full adders, and more complex variations such as ripple-carry adders.Books...
the jewelry comment-adder, not the initial annealing reference that I (being the above IP, etc) made. I thought that was distracting too (I didn't think that its use in jewelry added anything to the fact that it was a (general) metal-treatment) but if I was to complain about every...