Electronics and Communication Engineering - Digital Electronics

1. 

A Read/Write memory chip has a capacity of 64 k bytes. Assuming separate data and address line and availability of chip enable signal, what is the minimum number of pins required in the IC chip?

A. 28
B. 26
C. 24
D. 22

Answer: Option A

Explanation:

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2. 

SSI refers to ICs with

A. less than 12 gates on the same chip
B. less than 8 gates on the same chip
C. less than 6 gates on the same chip
D. less than 3 gates on the same chip

Answer: Option A

Explanation:

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3. 

In 8085, TRAP is

A. always maskable
B. cannot interrupt a service subroutine
C. used for catastrophic events like temporary power failure
D. lowest priority interrupt

Answer: Option C

Explanation:

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4. 

The simplest register is

A. buffer register
B. shift register
C. controlled buffer register
D. bidirectional register

Answer: Option A

Explanation:

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5. 

The logic realized by the circuit shown in figure

A. F = A ⊙ C
B. F = A ⊕ C
C. F = B ⊙ C
D. F = B ⊕ C

Answer: Option B

Explanation:

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