Silicon, Circuits, and the Digital Revolution
Full Adder Circuit
Work out the truth table for the following combination of gates. (2 pts.)
What does the circuit accomplish? (What does it do? -- in words!) (1 pt.)
(HINT: the two gates enclosed in the shaded box comprise a half-adder.)
Please label drawing above and columns below as needed to work out the truth table.
| C' | A | B | C | S | ||||
|---|---|---|---|---|---|---|---|---|
| 0 | 0 | 0 | ||||||
| 0 | 0 | 1 | ||||||
| 0 | 1 | 0 | ||||||
| 0 | 1 | 1 | ||||||
| 1 | 0 | 0 | ||||||
| 1 | 0 | 1 | ||||||
| 1 | 1 | 0 | ||||||
| 1 | 1 | 1 |
|
Comments, suggestions, or requests to ghw@udel.edu.
"http://www.physics.udel.edu/~watson/scen103/colloq2000/fulladder.html" Last updated May15, 2000. © George Watson, Univ. of Delaware, 2000. |