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Which of the following registers offers high impedance?
- a)data register
- b)data direction register
- c)individual control bit
- d)data register and data direction register
Correct answer is option 'C'. Can you explain this answer?
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Verified Answer
Which of the following registers offers high impedance?a)data register...
Explanation: The register which offers high impedance is the individual control bit or the third register which can be implemented by switching off both the buffers and putting their connections to the pin which offers high impedance.
Most Upvoted Answer
Which of the following registers offers high impedance?a)data register...
High Impedance in Registers
High impedance in registers refers to the ability of a register to present a high resistance to the circuit it is connected to, effectively isolating it from the rest of the system. This can be useful in scenarios where a register needs to be disconnected or tri-stated, allowing other components on the bus to communicate without interference.
Data Register vs. Data Direction Register
- Data Register: A data register is used to store data temporarily during processing. It holds the actual data being processed by the system.
- Data Direction Register: A data direction register, on the other hand, is used to control the direction of data flow in a bus. It determines whether the bus is set to input or output mode.
High Impedance in Individual Control Bit
- An individual control bit in a register can be set to a high impedance state, effectively isolating that specific bit from the rest of the bus.
- This allows for selective control over which bits are actively participating in the data transfer process.
Conclusion
In the context of the question, the individual control bit offers high impedance, allowing for fine-grained control over data flow on a bus. While both the data register and data direction register play important roles in data processing, it is the individual control bit that offers the specific capability of high impedance.
High impedance in registers refers to the ability of a register to present a high resistance to the circuit it is connected to, effectively isolating it from the rest of the system. This can be useful in scenarios where a register needs to be disconnected or tri-stated, allowing other components on the bus to communicate without interference.
Data Register vs. Data Direction Register
- Data Register: A data register is used to store data temporarily during processing. It holds the actual data being processed by the system.
- Data Direction Register: A data direction register, on the other hand, is used to control the direction of data flow in a bus. It determines whether the bus is set to input or output mode.
High Impedance in Individual Control Bit
- An individual control bit in a register can be set to a high impedance state, effectively isolating that specific bit from the rest of the bus.
- This allows for selective control over which bits are actively participating in the data transfer process.
Conclusion
In the context of the question, the individual control bit offers high impedance, allowing for fine-grained control over data flow on a bus. While both the data register and data direction register play important roles in data processing, it is the individual control bit that offers the specific capability of high impedance.
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Which of the following registers offers high impedance?a)data registerb)data direction registerc)individual control bitd)data register and data direction registerCorrect answer is option 'C'. Can you explain this answer?
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