How many inputs can be in a AND gate?
The truth table for a NAND gate is as one might expect, exactly opposite as that of an AND gate: As with AND gates, NAND gates are made with more than two inputs. In such cases, the same general principle applies: the output will be “low” (0) if and only if all inputs are “high” (1).
If the inputs are the same the output is low. Hence this truth table: You can find a XOR gate that have more than two inputs, but they are not actually a 3 input XOR. They XOR input A and B and the result of them "R" is then XOR with input C. And the result of R XOR C is then XOR with input 4 and so on.
- 1 XOR 1. The X in the XOR gate stands for "exclusive." This means that the output from this gate will be a 1 ONLY when one or the other of the inputs is a 1. Notice in the truth table that the output is a 0 if both the inputs are 1 or 0. In other words, this is an either-or gate.
- A Karnaugh map (K-map) is a pictorial method used to minimize Boolean expressions without having to use Boolean algebra theorems and equation manipulations. A K-map can be thought of as a special version of a truth table . Using a K-map, expressions with two to four variables are easily minimized.
- There are two remaining gates of the primary electronics logic gates: XOR, which stands for Exclusive OR, and XNOR, which stands for Exclusive NOR. In an XOR gate, the output is HIGH if one, and only one, of the inputs is HIGH. If both inputs are LOW or both are LOW, the output is LOW. Input A. Input B.
Updated: 21st September 2018