THE PRACTICE STUDIO
Go slowly. Ask why. Make it yours.
PRACTICE / Logic gates and truth tables
Recognize a combined logic condition
An ideal circuit computes X = A OR B, Z = A AND B, and final output Y = X AND (NOT Z).
For how many of the four binary input pairs is Y = 1?
Organize the givens & assumptions
- X = A OR B
- Z = A AND B
- Y = X AND (NOT Z)
- Four possible input pairs
Inclusive OR, ordinary AND and ideal NOT with stable binary inputs. Ignore delays.
- A
- B
- C
- D
Try it on paper first. Free sample problems in every collection include the complete reasoning: find one in this collection →