Electrical Engineering (EE) Exam > Electrical Engineering (EE) Questions > Consider the following statements:In 8085 mic...
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Consider the following statements:
In 8085 microprocessor, data - bus and addressbus are multiplexed in order to
1. Increase the speed of microprocessor
2. Reduce the number of pins.
3. Connect more peripheral chips.
Which of the above statement is/are correct?
- a)1 only
- b)2 only
- c)2 and 3
- d)1, 2 and 3
Correct answer is option 'B'. Can you explain this answer?
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Most Upvoted Answer
Consider the following statements:In 8085 microprocessor, data - bus a...
The correct answer is option 'B' - 2 only.
Explanation:
In the 8085 microprocessor, the data bus and address bus are not multiplexed. They are separate buses with dedicated lines for each.
1. Increase the speed of microprocessor:
Multiplexing the data bus and address bus does not directly increase the speed of the microprocessor. The speed of the microprocessor is determined by factors such as clock frequency, instruction execution time, and internal architecture. Multiplexing the buses may actually introduce additional delays and complexity in the system.
2. Reduce the number of pins:
Multiplexing is a technique used to reduce the number of pins required for communication. By sharing the same set of lines for different signals, fewer pins are needed on the microprocessor package. This helps in reducing the cost and complexity of the microprocessor. However, in the case of the 8085 microprocessor, the data bus and address bus are not multiplexed, so this statement is incorrect.
3. Connect more peripheral chips:
Multiplexing the data bus and address bus does not directly enable the connection of more peripheral chips. The number of peripheral chips that can be connected to a microprocessor is determined by factors such as the number of address lines and data lines available. Multiplexing can help in optimizing the pin usage, but it does not increase the number of available lines.
Therefore, the correct statement is option 'B' - 2 only, as the data bus and address bus in the 8085 microprocessor are not multiplexed to reduce the number of pins.
Explanation:
In the 8085 microprocessor, the data bus and address bus are not multiplexed. They are separate buses with dedicated lines for each.
1. Increase the speed of microprocessor:
Multiplexing the data bus and address bus does not directly increase the speed of the microprocessor. The speed of the microprocessor is determined by factors such as clock frequency, instruction execution time, and internal architecture. Multiplexing the buses may actually introduce additional delays and complexity in the system.
2. Reduce the number of pins:
Multiplexing is a technique used to reduce the number of pins required for communication. By sharing the same set of lines for different signals, fewer pins are needed on the microprocessor package. This helps in reducing the cost and complexity of the microprocessor. However, in the case of the 8085 microprocessor, the data bus and address bus are not multiplexed, so this statement is incorrect.
3. Connect more peripheral chips:
Multiplexing the data bus and address bus does not directly enable the connection of more peripheral chips. The number of peripheral chips that can be connected to a microprocessor is determined by factors such as the number of address lines and data lines available. Multiplexing can help in optimizing the pin usage, but it does not increase the number of available lines.
Therefore, the correct statement is option 'B' - 2 only, as the data bus and address bus in the 8085 microprocessor are not multiplexed to reduce the number of pins.
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Consider the following statements:In 8085 microprocessor, data - bus and addressbus are multiplexed in order to1. Increase the speed of microprocessor2. Reduce the number of pins.3. Connect more peripheral chips.Which of the above statement is/are correct?a)1 onlyb)2 onlyc)2 and 3d)1, 2 and 3Correct answer is option 'B'. Can you explain this answer?
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