This 2-bit adder was a lot of work to build. It uses a total of thirty-six 555 timers and it does have the option of adding or subtracting numbers. It’s a rather unorthodox use of the part, d… ...

2-bit Full Adder Using Just Thirty Six 555 Timers. February 28, 2011 by Mike Szczys 12 Comments . This 2-bit adder was a lot of work to build. It ...

Designer cells executing rationally assembled genetic programs that can process input signals with programmable logic are combined in a 3D cell culture that performs three-input, two-output full ...