Electronics and Communication Engineering - Digital Electronics

36. 

In the above case the hexadecimal notation for the last memory location is

A. 0000
B. FFFF
C. 3FFF
D. 5FFF

Answer: Option B

Explanation:

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37. 

What is the length of SP (Stack pointer) of 8085 μp?

A. 6 bits
B. 8 bits
C. 12 bits
D. 16 bits

Answer: Option D

Explanation:

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38. 

Shifting digits from left to right and vice versa is needed in

A. storing numbers
B. arithmetic operations
C. counting
D. storing and counting

Answer: Option B

Explanation:

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39. 

Current requirement of a piezo buffer is about

A. 100mA
B. 20mA
C. 4mA
D. 0.4mA

Answer: Option C

Explanation:

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40. 

Consider the following instruction of 8085 μp :

  1. MOV M, A
  2. AODC
  3. MVI A, FF
  4. CMP M
Which of these cause change in the status of flag(s)?

A. 1 and 2
B. 1, 2 and 3
C. 3 and 4
D. 2 and 4

Answer: Option D

Explanation:

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