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Microprocessor

Microprocessor
The first microprocessor to include virtual memory in the intel microprocessor family is

 Pentium
 80486
 80386
 80286

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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

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

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

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

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Microprocessor
At the beginning of a fetch cycle, the contents of the program counter are

 transferred to memory address register .
 incremented by one.
 transferred to address bus.
 transferred to memory data register.

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Microprocessor
In 8085, the pins for SID and SOD are

4 and 3 respectively
3 and 4 respectively
4 and 5 respectively
5 and 4 respectively

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