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Welcome to the 80286 80287 Microprocessor MCQs Page

Dive deep into the fascinating world of 80286 80287 Microprocessor with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of 80286 80287 Microprocessor, a crucial aspect of Microprocessor. In this section, you will encounter a diverse range of MCQs that cover various aspects of 80286 80287 Microprocessor, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within Microprocessor.

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80286 80287 Microprocessor MCQs | Page 4 of 19

Q31.
80486DX was followed by ________.
Discuss
Answer: (a).80486SX
Q32.
In 8279 Strobed input mode, the control line goes low. The data on return lines is strobed in the
___________.
Discuss
Answer: (a).FIFO byte by byte
Q33.
________ bit in ICW1 indicates whether the 8259A is cascade mode or not ?
Discuss
Answer: (c).SNGL=0
Q34.
In 8279, a scanned sensor matrix mode, if a sensor changes its state, the __________ line goes ___________ to interrupt the CPU.
Discuss
Answer: (c).IRQ, high
Q35.
In 80186, the timer which connects to the system clock is
Discuss
Answer: (c).timer 2
Q36.
Which pins are general purpose I/O pins during mode-2 operation of the 82C55?
Discuss
Answer: (a).PA0 – PA7
Q37.
The fetching of the program from secondary memory to place it in physical memory, during the execution of CPU is called
Discuss
Answer: (b).swapping in
Q38.
Which of the block is not considered as a block of an architecture of 80286?
Discuss
Answer: (d).control unit
Q39.
The device that interfaces and control the internal data bus with the system bus is
Discuss
Answer: (d).data transreceiver
Q40.
For which of the following instruction does the return address point to instruction causing an exception?
Discuss
Answer: (d).all of the mentioned
Page 4 of 19

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