1
Q
OR gate
A
- one variable must fit the requirements
- Christmas hat
2
Q
NOR gate
A
- opposite of OR gate
- Christmas hat with circle
3
Q
AND gate
A
- both variables must fill the requirements
- mushroom
4
Q
NAND gate
A
- opposite of AND gate
- mushroom with circle
5
Q
XOR gate
A
- same as OR gate except if both variables are 1 or 0 then it has an output of 0/false
- Christmas hat with curved line
6
Q
XNOR gate
A
- opposite of XOR gate
- Christmas hat with curved line and circle
7
Q
Buffer
A
- keeps input same
- triangle
8
Q
NOT gate
A
- makes the variable its opposite
- triangle with circle
9
Q
What is the pattern for truth tables
A
1,2,4,8,16
10
Q
What does A*B mean
A
A AND B
11
Q
A
12
Q
What does A + B mean
A
A OR B
13
Q
What does A with a line above it mean
A
NOT A
14
Q
What is one rule for writing logic expressions
A
Must be all capital
15
Q
A
Computer Science - IGCSE
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