Electronics and Communication Engineering - Microprocessors

41. 

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.

A. Both A and R are correct and R is correct explanation of A
B. Both A and R are correct but R is not correct explanation of A
C. A is correct R is wrong
D. A is wrong R is correct

Answer: Option A

Explanation:

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42. 

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

A. Crystal
B. RC circuit
C. LC resonant circuit
D. Crystal and RC circuit

Answer: Option B

Explanation:

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43. 

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

A. 01101100 00000000 00000000 10000100
B. 00000000 01101100 00000000 10000100
C. 00000000 01101100 10000100 00000000
D. 01101100 00000000 10000100 00000000

Answer: Option A

Explanation:

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44. 

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?

A. All
B. 1 and 2 only
C. 2 and 3 only
D. 1, 3 only

Answer: Option B

Explanation:

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45. 

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

A. 8085
B. 8086
C. partly 8085 and partly 8086
D. none of the above

Answer: Option B

Explanation:

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