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Questions and Answers
What is the primary purpose of a combinational logic circuit?
What is the primary purpose of a combinational logic circuit?
Which of the following is an example of a combinational logic circuit?
Which of the following is an example of a combinational logic circuit?
What is the main function of a decoder in combinational logic circuits?
What is the main function of a decoder in combinational logic circuits?
What is the role of a sequential logic circuit?
What is the role of a sequential logic circuit?
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What is the distinguishing feature of a flip-flop in sequential logic circuits?
What is the distinguishing feature of a flip-flop in sequential logic circuits?
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What is the main difference between combinational and sequential circuits?
What is the main difference between combinational and sequential circuits?
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Which arithmetic circuit accepts 2 binary bits as inputs and produces sum and carry?
Which arithmetic circuit accepts 2 binary bits as inputs and produces sum and carry?
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What does a Full-Subtractor circuit accept as inputs and produce as outputs?
What does a Full-Subtractor circuit accept as inputs and produce as outputs?
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Which circuit determines whether there is a borrow-out when accepting 2 inputs?
Which circuit determines whether there is a borrow-out when accepting 2 inputs?
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What is the function of a Binary Parallel Adder circuit?
What is the function of a Binary Parallel Adder circuit?
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What is the primary function of a half-adder circuit in combinational logic?
What is the primary function of a half-adder circuit in combinational logic?
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What distinguishes a full-adder circuit from a half-adder circuit in combinational logic?
What distinguishes a full-adder circuit from a half-adder circuit in combinational logic?
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What is the main purpose of a half-subtractor circuit in combinational logic?
What is the main purpose of a half-subtractor circuit in combinational logic?
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What does a full-subtractor circuit accept as inputs and produce as outputs in combinational logic?
What does a full-subtractor circuit accept as inputs and produce as outputs in combinational logic?
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Which best describes the main function of a binary parallel adder circuit in combinational logic?
Which best describes the main function of a binary parallel adder circuit in combinational logic?
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What is the primary function of a magnitude comparator in combinational logic circuits?
What is the primary function of a magnitude comparator in combinational logic circuits?
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Which type of sequential logic circuit employs memory elements such that the state of each output channel depends on the previous states of the input channel?
Which type of sequential logic circuit employs memory elements such that the state of each output channel depends on the previous states of the input channel?
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What is the distinguishing feature of a shift register in sequential logic circuits?
What is the distinguishing feature of a shift register in sequential logic circuits?
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What is the function of a demultiplexer in combinational logic circuits?
What is the function of a demultiplexer in combinational logic circuits?
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Which circuit is responsible for converting binary information from n input lines to a maximum of 2𝑛 unique output lines in combinational logic circuits?
Which circuit is responsible for converting binary information from n input lines to a maximum of 2𝑛 unique output lines in combinational logic circuits?
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Study Notes
Combinational Logic Circuits
- The primary purpose of a combinational logic circuit is to produce output based on the current input.
- Examples of combinational logic circuits include decoders, adders, and subtractors.
Decoder
- The main function of a decoder in combinational logic circuits is to generate the output based on the input code.
Sequential Logic Circuits
- The role of a sequential logic circuit is to produce output based on the current input and the previous input/output.
- Sequential logic circuits employ memory elements.
Flip-Flop
- The distinguishing feature of a flip-flop in sequential logic circuits is its ability to store binary information.
Combinational vs Sequential Circuits
- The main difference between combinational and sequential circuits is that combinational circuits do not store binary information, whereas sequential circuits do.
Arithmetic Circuits
- A half-adder circuit accepts 2 binary bits as inputs and produces sum and carry.
- A full-subtractor circuit accepts 2 binary bits (minuend and subtrahend) and produces difference and borrow.
- A half-subtractor circuit accepts 2 binary bits (minuend and subtrahend) and produces difference and borrow-out.
Binary Parallel Adder
- The function of a Binary Parallel Adder circuit is to add multiple binary bits in parallel.
- The primary function of a half-adder circuit in combinational logic is to add 2 binary bits.
- A full-adder circuit is distinguished from a half-adder circuit in combinational logic by its ability to add 3 binary bits (2 inputs and a carry-in).
Magnitude Comparator
- The primary function of a magnitude comparator in combinational logic circuits is to compare the magnitude of two binary numbers.
Sequential Logic Circuits
- A Mealy machine is a type of sequential logic circuit that employs memory elements such that the state of each output channel depends on the previous states of the input channel.
- The distinguishing feature of a shift register in sequential logic circuits is its ability to shift binary data.
- The function of a demultiplexer in combinational logic circuits is to connect a single input line to one of multiple output lines.
Encoder
- An encoder is a circuit that is responsible for converting binary information from n input lines to a maximum of 2^n unique output lines in combinational logic circuits.
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Description
Test your knowledge of combinational logic circuits, including the differences between combinational and sequential circuits, as well as arithmetic circuits like half-adders. This quiz covers the basic concepts and components of combinational logic circuits.
