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Microprocessor

Microprocessor
Total number of modes the 8253 can work

 6
 4
 8
 12

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Microprocessor
For a memory with a 16-bit address space, the addressability is

8 bits
2^16 bits
Cannot be determined
16 bits

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Microprocessor
What are the sets of commands in a program which are not translated into machine instructions during assembly process, called?

 Mnemonics
 Operands
 Identifiers
 Directives

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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.

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

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Microprocessor
The first machine cycle of an instruction is always

 An I/O read cycle
 A fetch cycle
 A memory write cycle
 A memory read cycle

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Microprocessor
Pick up the programmable interrupt controller from the following

 8257
 8275
 8279
 8259

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