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Microprocessor

Microprocessor
How many 16-bit special purpose registers are present in 8085 microprocessor?

 2
 6
 8
 16

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Microprocessor
Which one of the following statement is false?

 A microprocessor has bi-directional data bus
 A microprocessor has unidirectional address bus
 A microprocessor has bi-directional address bus
 A microprocessor has an ALU

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Microprocessor
The 8085 microprocessor enters into bus idle machine cycle whenever

 RST 7.5 is recognized
 INTR interrupt is recognized
None of these
 DAD RP instruction is executed

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Microprocessor
The frequency of the driving network connected between pins 1 and 2 of 8085 microprocessor is

 four times the desired frequency
None of these
 twice the desired frequency
 equal to the desired frequency

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Microprocessor
Register pair used to indicate memory

 W and Z
 H and L
 B and C
 D and E

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Microprocessor
The reason for the presence of ALE pin in 8085, but not in 6800 is that

 8085 has multiplexed bus, whereas 6800 does not have
 None
 8085 uses I/O mapped I/O, whereas 6800 uses memory mapped I/O
 8085 has 5 interrupts lines, whereas 6800 has only two

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