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MCQs

Total Questions : 457 | Page 15 of 46 pages
Question 141. A preliminary guide for comparing the simplicity of logic circuits is to count the number of input _____ leads.
  1.    wire
  2.    bus
  3.    gate
  4.    All of the above
  5.    None of the above
 Discuss Question
Answer: Option C. -> gate
Question 142. Convert the 1000 0000 0000 1111 signed binary number to decimal number.
  1.    15
  2.    -15
  3.    -30
  4.    30
  5.    None of the above
 Discuss Question
Answer: Option B. -> -15
Question 143. The output of the following gate is 1 only if at least one of its inputs is 0.
  1.    AND gate
  2.    OR gate
  3.    NAND gate
  4.    NOR gate
  5.    None of the above
 Discuss Question
Answer: Option C. -> NAND gate
Question 144. The _____ is a sequence of instructions that tells the computer how to process the data.
  1.    data
  2.    program
  3.    controls
  4.    instruction
  5.    None of the above
 Discuss Question
Answer: Option B. -> program
Question 145. The highest decimal number that can be represented with 10 binary digits is
  1.    1023
  2.    1024
  3.    512
  4.    All of the above
  5.    None of the above
 Discuss Question
Answer: Option A. -> 1023
Question 146. The clock signals are used in sequential logic circuits
  1.    to tell the time of the day
  2.    to tell how much time has elapsed since the system was turned on
  3.    to carry serial data signals
  4.    to synchronize events in various parts of a system
  5.    None of the above
 Discuss Question
Answer: Option D. -> to synchronize events in various parts of a system
Question 147. In boolean algebra, the overbar stands for the NOT operation, the plus sign stands for the _____ operation.
  1.    AND
  2.    OR
  3.    NAND
  4.    NOR
  5.    None of the above
 Discuss Question
Answer: Option B. -> OR
Question 148. A full-adder adds _____ bits, and producing a SUM and a _____
  1.    8, SUBTRACTION
  2.    3, CARRY
  3.    16, DIVIDE
  4.    All of the above
  5.    None of the above
 Discuss Question
Answer: Option B. -> 3, CARRY
Question 149. The reduced form of the Boolean expression (A+B)(A+C) is:
  1.    AB+AC
  2.    A+B+C
  3.    AC+B
  4.    A+BC
  5.    None of the above
 Discuss Question
Answer: Option D. -> A+BC
Question 150. The radix of the binary number is:
  1.    3
  2.    1
  3.    2
  4.    10
  5.    None of the above
 Discuss Question
Answer: Option C. -> 2

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