Q. In 8085, high level on INTR line can be recognised only if

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Q. Consider the following statements

1. The sign of a floating point number depends on the sign of mantissa only.
2. If the absolute value of a number is less than 1, the sign of exponent is zero or positive.
3. With sign bit of mantissa as 0, increasing the exponent from a positive to a more positive value gives a larger floating point number.

Which of the above are correct?

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Q. Assertion (A): In microprocessor 8085 instruction LXIB, 90 FF H means register B and C are loaded with upper and lower bytes to get B = 90 H and C = FFH.

Reason (R): In 8085 the stack pointer indicates which memory location is to accessed.

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Q. To add 8 bit words, two IC 74181 can be cascaded.

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Q. The initial contents of ACC and CY in 8085 are

1. CY = 1
2. ACC = 10000001

After instruction RAL is executed once the contents of CY and ACC respectively will be

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Q. Which one is true for writing array variable in Pascal?

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Q. In 8085, which of the following is an 8 bit register?

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Q. What does the instruction 'PCHL' in 8085 do?

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Q. In a multi-processor configuration two coprocessors are connected to host 8086 processor. The instruction sets of the two coprocessors

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Q. Virus is a

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Q. Assertion (A): C allows the use of logical operators, AND, OR, NOT.

Reason (R): C has logical operators as well as bitwise operators like AND, OR etc.

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Q. The read and write cycle times of cache memory are in the range of

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Q. In 8086

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Q. In which of the following logical group instructions of 8085 do the contents of accumulator remain unchanged?

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Q. If quadratic equation x² - 1000x + 25 = 0 is solved using floating point arithmetic with 4 digit mantissa, the roots are

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Q. Assertion (A): In microprocessor 8085 DMA allows direct access to memory to speed up data transfer.

Reason (R): HOLD and HLDA signals are used for DMA operations.

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Q. Which of the following is not a valid variable in FORTRAN 77?

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Q. The expression A ** B / C + D is equivalent to

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Q. Consider the following symbols

1. Letters A to Z and a to z
2. Digits 0 to 9
3. Logical operators and, or, not
4. Parenthesis ( )

Which of the above symbols are available in Pascal?

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Q. Which of the following 8085 instructions does not belong to arithmetic group?

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