Question

Select the correct expression for the output X of the following diagram.

Answer 1

@dumbcow

Answer 2

@geerky42

Answer 3

@tnt4ever

Answer 4

use this to help you
http://en.wikipedia.org/wiki/Logic_gate

Answer 5

wow its been awhile since i used logic gates...fun

ok so the expression would be
\[X = (A' OR B)'\]
do they use "v" for or ?

Answer 6

X= NOT(NOT(A) OR B))

or

¬(¬A V B)

Answer 7

well its i need to use any of these lines or no line at all

Answer 8

so not means no line on top?

Answer 9

ok using those lines it would be

Answer 10

it cant be it has to be only 1 line

Answer 11

either its over a and b or just a and or just b or no line at all

Answer 12

oh i see they simplified it by distributing the negation

~(~A v B) = A ^ ~B

the "not" means it has the line over it

Answer 13

so line just over a?

Answer 14

no the negation is on B, the line would be over B