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Microprocessor

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

 PAL
 PLA
 PROM
 PLD

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Microprocessor
Which one of the following statement is false?

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

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Microprocessor
Total number of modes the 8253 can work

 6
 8
 12
 4

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Microprocessor
Assuming LSB is at position 0 and MSB at position 7, which bit positions are not used (Undefined) in flag register of an 8085 microprocessor?

 2, 3, 5
 1, 3, 4
 1, 3, 5
 1, 2, 5

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Microprocessor
S0 and S1 pins are used for

 acknowledging the interrupt
 serial communication
 indicating the processor’s status
None of these

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Microprocessor
Each instruction in assembly language program has the following fields:Lable fieldMnemonic fieldOperand fieldComment fieldThe correct sequence of these fields is?

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

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