Computer Science for IGCSE & O level - Boolean Logic (Section 11 - No. 2)
If you have an OR gate, and you want the output to be 0, what must the inputs be?
Both 1
One 1 and one 0
Both 0
One 0 and one 1
Explication
An OR gate requires both of its inputs to be 0 for it to output 0.