Logic gates

How many inputs of an AND gate need to be 1 to output 1?

• 3
• 1
• 2
• none

How many inputs of an OR gate must be 1 to output 1?

• 3
• 1
• 2
• none

How many inputs of a NOR gate must be 1 to output 1?

• none
• 1
• 2
• 3

How many inputs of an XOR gate must be 1 to output 1?

• 2
• none
• 3
• 1

In a binary addition what type of circuit is used for the LSB only?

• Adder
• Viper
• Rattler
• Half adder

How many logic gates are used in a half adder?

• none
• 1
• 2
• 3

A full adder is used for all other digits in addition, how many logic gates will it use?

• 3
• 4
• 5
• 2

In Binary 1 + 1 =?

• 1
• 10
• 11
• 2

Binary 10101010 = in decimal?

• 85
• 170
• 180
• 75

When subtracting B from A computers add the inverse of B to A. This process is called?

• Binary two
• two's enough
• two's compliment
• two's too many