• 8
• 16
• 32
• 4
• #### 2.  When is the output for OR gate TRUE?

• A.When both inputs are TRUE.
• B.When at least one of the inputs is TRUE.
• C.When both inputs are FALSE
• D.When at least one of the inputs is FALSE.

• AND
• OR
• NOT
• NOR

• *
• +
• -
• %

• 2
• 4
• 6
• 8

• A.A^B
• B.A˅B
• C.¬A^B

• 85
• 170
• 180
• 75
• #### 8.  5.Which of the following is FALSE about a NOT gate?

• A.The output of NOT is complementary to the input
• B.When the input to NOT gate is 0, the output is 1.
• C.A NOT gate has two input signals and an output signal.
• D.None of the above
• #### 9.  2.What is a truth table?

• A.A table that denotes the different outputs of the logic gates or circuit with respect to different inputs.
• B.A table that represents how logic gates are combined to form a logic circuit.
• C.A table that shows the input combinations that result in a binary output 1 in a logic gate.
• #### 10.  Logc Circuits are formed of

• AND Gates
• OR Gates
• NOT Gates
• All of the above

• AND
• OR
• NOT
• #### 12.  A NOT gate has…

• Two inputs and one output
• One input and one output
• One input and two outputs
• Two inputs and two outputs
• #### 13.  Why do we make intermediate columns when constructing truth tables?

• Because it gets us more marks
• Because it's impossible to get the answer without them
• Because it makes working out the solution easier
• There is no reason to make them
• #### 14.  The OR Gate has Algebraic presentation of

• plus sign (-)
• Plus (+)
• None of these

• A.2×n
• B.2n
• C.n÷2

• 1
• 2
• 3
• 4
• #### 17.  Electronic switch built in 1947

• transistor
• semiconductor
• diode
• vacuum tube

• AND
• OR
• NOT
• TO

• 0
• 1
• #### 20.  How do we get all the inputs for a truth table with 3 inputs?

• Guess all the combinations of 1s and 0s
• Count up in binary from 000
• Count up in binary from 111
• Count up in binary from 1
• #### 21.  What is a logic circuit?

• A combination of logic gates that performs a specific function.
• A combination of logic gates that understands both binary and decimal number systems.
• A combination of logic gates that understands decimal number system.
• #### 22.  1.Which of the following statement is FALSE about logic gates?

• A.Logic gates are the building blocks of electronic circuits.
• B.It used in computer components like memory.
• C.Combination of logic gates is called a logic circuit.
• D.Logic gates understand the binary language.
• E.None of the above.
• #### 23.  An OR gate has

• Two inputs and one output
• One input and one output
• One input and two outputs
• Two inputs and two outputs

• AND
• OR
• XOR
• NOT
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