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Microprocessor

Microprocessor
A microprocessor with a 12-bit address bus will be able to access

 8 K bytes
 4 K bytes
 10 K bytes
 1 K bytes

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Microprocessor
During the execution of the instruction, the ________tests the status and control flags and updates them based on the results of executing the instruction.

 Execution Unit (EU)
 Bus Interface Unit (BIU)
 Both ‘c’ and ‘d’
 None of these

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Microprocessor
What is SIM?

 Sorting interrupt mask.
  Set interrupt mask.
 None of these.
 Select interrupt mask.

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Microprocessor
A combinational PLD with a programmable AND array and a fixed OR array is called a

 PLD
 PROM
 PLA
 PAL

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Microprocessor
Which one of the following statement is false?

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

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Microprocessor
In an intel 8085A, which is the first machine cycle of an instruction?

 An op-code fetch cycle
 An I/O read cycle
 A memory write cycle
 A memory read cycle

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