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Microprocessor

Microprocessor
The number of output pins in 8085 microprocessors are

 21.
 27.
 19.
 40.

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Microprocessor
If the number of address bits in a memory is reduced by 2 and the addressability is doubled, the size of the memory (i.e., the number of bits stored in the memory)

Increases by 2^(address bits)/addressability
Doubles
Halves
Remains unchanged

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Microprocessor
The data bus of any microprocessor is always

 Unidirectional
 None
 Bi-directional
 Either unidirectional or bi-directional

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Microprocessor
Number of Hex digits needed to represent the 20-bit address of a memory location are

 16
 20
 5
 4

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Microprocessor
In a microcomputer , the address of memory locations are binary numbers that identify each memory circuit where a byte is stored. If a microcomputer uses 20-bit address, then numbers of different memory locations are

 20
 220
 220-1
 220 - 1

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Microprocessor
Consider the following registers: 1. Accumulator and flag register 2. B and C register 3. D and E register 4. H and L register Which of these 8-bit registers of 8085 microprocessor can be paired together to make a 16-bit register?

 1, 3 and 4
 1, 2 and 3
 1, 2 and 4
 2, 3 and 4

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