Digital Computer Electronics MCQ Questions & Answers

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Each section contains 100 MCQs on Digital Computer Electronics .

If a microcomputer has a 64K memory, what are the hexadecimal notations for the first and last memory location?

A) 0000, EEEE B) 0, 64 C) 0000, FFFF D) 0000, 9999 E) None of the above

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

A microprocessor has memory locations from 0000 to 3FFF. Each memory location stores 1 byte. How bytes can the memory store? Express this in kilobytes?

A) 4,095, 4K B) 16,384, 16K C) 32,740, 32K D) 46,040, 46K E) None of the above

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

The m-bit parallel adder consists of:

A) (m+1) full adders B) m/2 full adders C) m-1 full adders D) m full adders E) None of the above

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

An OR gate has 6 inputs. How many input words are in its truth table?

A) 64 B) 32 C) 16 D) 128 E) None of the above

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

Which TTL sub-family has maximum speed?

A) standard TTL B) schottky-clamped TTL C) high speed TTL D) low power TTL E) None of the above

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

Conversion of binary number 110001₂ to its decimal number is

A) 27₁₀ B) 49₁₀ C) 39₁₀ D) 50₁₀ E) None of the above

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

The OR gate has two or more input signals. If any input is _____ the output is high.

A) low B) high C) 0 D) All of the above E) None of the above

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

How many memory locations can 14 address bits access?

A) 16,384 B) 8,192 C) 4096 D) 14 E) None of the above

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

The ASCII code is a 7-bit code for

A) letters B) numbers C) other symbols D) All of the above E) None of the above

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

The EXCLUSIVE - NOR gate is equivalent to an _____ gate followed by an invertor.

A) OR B) AND C) NAND D) XOR E) None of the above

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

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Digital Computer Electronics MCQ Questions & Answers | Computer Science