Microprocessors

Exercise: Microprocessors

Assertion (A): The data bus and address bus of 8085 are multiplexed.

Reason (R): Multiplexing reduces the number of pins.

Both A and R are correct and R is correct explanation of A

Both A and R are correct but R is not correct explanation of A

A is correct R is wrong

A is wrong R is correct

Answer: A

In 8085 signal lines AD₇ - AD₀ are used for address bits in some T states and for data in some other T states.

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A modem is connected to PC at

serial port

parallel port

SCSI port

input port

Answer: A

Modem is connected at serial port.

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Which of the following is operating system?

MS WORD

Ventura

Java

Windows

Answer: D

Windows is an operating system.

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LET JCOKE = 11 and LPEPSI = 19. Consider the statement



IF (JCOKE - LPEPSI) 5, 5, 7
5 JCOKE = JCOKE + 2 
7 JCOKE = JCOKE + 5

The value of JCOKE after the execution of above statement will be

Answer: A

(J COKE - L PEPSI) is 11 - 19 = - 8 Since (J COKE - L PEPSI) is negative statement 5 is executed and result is 11 + 2 = 13.

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Binary storage of decimal number 44 in 8 bits is

00101100

10101100

10101101

00101101

Answer: A

Use decimal to binary conversion method.

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