2.5
Boolean Logic
AND, OR, NOT gates and truth tables
AND gate: Both inputs must be 1 for output 1
OR gate: At least one input 1 for output 1
NOT gate: Inverts the input
XOR gate: Exactly one input 1 for output 1
NAND: NOT AND, NOR: NOT OR
Truth tables show all input/output combinations
Exam Tips
- •Always define key terms before explaining concepts
- •Use specific examples where possible to demonstrate understanding
- •Check mark allocation - one point per mark is a good guide