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Questions and Answers
Which type of logic circuit consists of logic gates whose outputs are determined from only the present combination of inputs?
Which type of logic circuit consists of logic gates whose outputs are determined from only the present combination of inputs?
- Sequential circuit
- Exclusive-OR logic circuit
- AND-OR logic circuit
- Combinational circuit (correct)
What kind of logic circuit directly implements an SOP expression?
What kind of logic circuit directly implements an SOP expression?
- Combinational circuit
- Exclusive-NOR logic circuit
- AND-OR logic circuit (correct)
- Sequential circuit
Which type of logic circuit is implemented by a combination of two AND gates, one OR gate, and two inverters?
Which type of logic circuit is implemented by a combination of two AND gates, one OR gate, and two inverters?
- Sequential circuit
- Exclusive-OR logic circuit (correct)
- Exclusive-NOR logic circuit
- Combinational circuit
Which type of logic circuit is implemented by simply inverting the output of an Exclusive-OR logic circuit?
Which type of logic circuit is implemented by simply inverting the output of an Exclusive-OR logic circuit?
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Which type of logic circuit employs storage elements in addition to logic gates?
Which type of logic circuit employs storage elements in addition to logic gates?
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Study Notes
Logic Circuits
- Combinational logic circuit: consists of logic gates whose outputs are determined from only the present combination of inputs.
Sum of Products (SOP) Expression
- Implemented by a Product-of-Sums (POS) expression, which is a type of logic circuit that directly implements an SOP expression.
Logic Gate Implementation
- A combination of two AND gates, one OR gate, and two inverters implements a type of logic circuit.
Exclusive-NOR (XNOR) Logic Circuit
- Implemented by simply inverting the output of an Exclusive-OR (XOR) logic circuit.
Sequential Logic Circuit
- Employs storage elements in addition to logic gates.
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