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Q:

what are the various flags used in 8085?

Answer

Sign flag, Zero flag, Auxillary flag, Parity flag, Carry flag.

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Subject: Hardware

Q:

The car dealer found that there was a tremendous response for the new XYZ's car-booking with long queues of people complaining about the duration of business hours and arrangements.

 

Courses of Action: 

 I. People should make their arrangement of lunch and snacks while going for car XYZ's booking and be ready to spend several hours.

II. Arrangement should be made for more booking desks and increased business hours to serve more people in less time.

A) Only I follows B) Only II follows
C) Neither I nor II follows D) Both I and II follow
 
Answer & Explanation Answer: B) Only II follows

Explanation:

Seeing the tremendous response, the dealer must make suitable arrangements and deploy more personnel to take care of customers so that they don't have to wait excessively long for booking. So, only course II follows.

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Q:

Which interrupts is not level-sensitive in 8085?

Answer

TST 7.5 is a raising edge-triggering interrupt.

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Subject: Hardware

Q:

All dolls are windows.All bottles are windows.All cars are bottles.

1. All cars are windows

2. some cars are dolls

3. some windows are cars

Which among the above listed are true

A) only 1 and 2 follow B) only 2 and 3 follow
C) only 1 and 3 follow D) all follow
 
Answer & Explanation Answer: C) only 1 and 3 follow

Explanation:

All cars are bottles.All bottles are windows.

 

Since both premises are universal,the conclusion must be universal and should'nt contain the middle term.So it follows that 'All cars are windows'.Thus,1 follows.Also 3 is the converse of this conclusion and hence it holds

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Q:

Give an example of one address microprocessor?

Answer

8085 is a one address microprocessor. In 8085 interrupts  are classified by software and hardware interrupts.

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Subject: Hardware

Q:

1. All beutiful things are sad.She is beutiful.She is sad

2. All nice things are flat.TV are flat.TV's are nice things

3. Potatoes are stems.All stems are fruits.Potatoes are fruits

 

Choose the alternative where the 3rd segment can be deduced from above two

A) 1 only B) 1 and 2
C) 3 only D) 1 and 3
 
Answer & Explanation Answer: D) 1 and 3

Explanation:
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Q:

Can 8259 he interfaced with 8085 via the trap pin?

Answer

Yes... so if 8529 gives interrupt then it will be serviced immediately but since INTA pin is left hanging the INSR bit will never be set.. and so whenever my interrupt occurs depending upon priority it will be serviced.. also the ISR address for all interrupts will be same ie 0024H..


Interrupt via trap is nonmaskable, so it will be serviced immediately.

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Subject: Hardware

Q:

What is the logical difference b/w Move A to B and COMPUTE B=A?

Answer

In case of Move A to B it will move whatever the value of A into B.It mean it will move numeric, alphanumeric and alphabatic value.


In case of COMPUTE B=A it will assign the value of A into B. But in case of compute only numeric value will be compute.

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Subject: Hardware