Q. In 8085

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Q. Assertion (A): Microprocessor 8085 has an 8 bit register called accumulator which stores intermediate answers during a computer operation.

Reason (R): Accumulator can send or receive data.

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Q. Assertion (A): Interfacing means synchronisation of digital information transmission between input output devices and computer.

Reason (R): A computer with higher bit word size executes programs at a faster rate.

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Q. IC 74181 is a 4 bit device.

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Q. Which of the following instructions in 8085 does not belong to data transfer group?

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Q. Assertion (A): A PROM is a user programmable ROM.

Reason (R): After programming PROM behaves like ROM.

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Q. The operator precedence in Java is in the order

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Q. A colour monitor usign 16 bits at a resolution of 600 x 400 pixels needs a memory of

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Q. Read the following statements as regards register pairs in microprocessor 8085

1. B represents B, C pair with B as high order register and C as low order register.
2. D represents D, E pair with D as high order register and E as low order register.
3. H represents H, L pair with H as high order register and L as low order register.

Which of the above statements are correct?

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Q. The 8085 instruction 'PUSH PSW' belongs to the group

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Q. Assertion (A): In C it is possible for functions to call themselves.

Reason (R): C makes use of 'Pointers'.

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Q. In IC 74181 a sum greater than 15 leads to low carry out.

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Q. Assertion (A): In 8085, the zero flag is set when ALU operation results in 0. If the result is not 0, this flag is reset.

Reason (R): In 8085 the S flag is set when the contents of accumulator become negative during execution of an instruction.

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Q. The operations which occur most frequently in a computer are

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Q. Assertion (A): A dynamic RAM chip has much smaller cell than a static RAM chip.

Reason (R): In dynamic RAM one bit of information is stored as the charge on a capacitor.

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Q. Which of the following produces very wide drifts in clock frequency?

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Q. For decimal numbe'r 13.5, the floating point representation in 4 byte excess 128 code is

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Q. Read the following statements:

1. A μP generally interfaced to several memory chips and I/O devices
2. Address space provided by μP is partitioned into sub sets of addresses
3. Address map and address partition refer to different terms in address space

Which of the above are correct?

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Q. The register set and instruction set of 8088 is similar to that of

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Q. Assertion (A): In direct addressing the address of operand is specified in the instruction.

Reason (R): Direct addressing is also called absolute addressing.

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