Hassaan

w|x |y |(y.x)|(y.x)+w 0|0|0 | 0 | 0 0|0|1 | 0 | 0 0|1|0 | 0 | 0 0|1|1 | 1 | 1 1|0|0 | 0 | 1 1|0|1 | 0 | 1 1|1|0 | 0 | 1 1|1|1 | 1 | 1 y|x |w |(y.x)|(y.x)+w 0|0|0 | 0 | 0 0|0|1 | 0 | 1 0|1|0 | 0 | 0 0|1|1 | 0 | 1 1|0|0 | 0 | 0 1|0|1 | 0 | 1 1|1|0 | 1 | 1 1|1|1 | 1 | 1 How come it doesn't matter; the output is different, isn't it?

I'd really appreciate if someone could tell me how to determine the variable order in a truth table e.g. how should we go about creating a truth table for the Boolean expression (y.x)+w? Are we supposed to list these Boolean variables in alphabetical order: w|x|y|(y.x)|(y.x)+w 0|0|0| 0|0|1| 0|1|0| 0|1|1| 1|0|0| 1|0|1| 1|1|0| 1|1|1| Or do we list them in the order they appear in the expression(left to right): y|x|w|(y.x)|(y.x)+w 0|0|0| 0|0|1| 0|1|0| 0|1|1| 1|0|0| 1|0|1| 1|1|0| 1|1|1|