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Computer Aptitude

BASICS OF HARDWARE AND SOFTWARE MCQs

Total Questions : 319 | Page 31 of 32 pages
Question 301.  Which of the following is not a computer bus?
  1.    data bus
  2.    timer bus
  3.    control bus
  4.    address bus
 Discuss Question
Answer: Option B. -> timer bus
Question 302.  The technique of assigning a memory address to each I/O device in the SAM system is called:
  1.    wired I/O
  2.    I/O mapping
  3.    dedicated I/O
  4.    memory-mapped I/O
 Discuss Question
Answer: Option D. -> memory-mapped I/O
Question 303. . A port can be:
  1.    strictly for input
  2.    strictly for output
  3.    bidirectional
  4.    all the above
 Discuss Question
Answer: Option C. -> bidirectional
Question 304.  How many bits are used in the data bus?
  1.    7
  2.    8
  3.    9
  4.    16
 Discuss Question
Answer: Option B. -> 8
Question 305. . Which of the following is not a basic element within the microprocessor?
  1.    microcontroller
  2.    arithmetic-logic unit (ALU)
  3.    temporary register
  4.    accumulator
 Discuss Question
Answer: Option A. -> microcontroller
Question 306. . Exceptions to the 8085 microprocessor normal operation are called:
  1.    jump instructions
  2.    decoding
  3.    interrupts
  4.    jump instructions or interrupts
 Discuss Question
Answer: Option D. -> jump instructions or interrupts
Question 307. . How many bits are used in the address bus?
  1.    7
  2.    8
  3.    9
  4.    16
 Discuss Question
Answer: Option D. -> 16
Question 308. . A register in the microprocessor that keeps track of the answer or results of any arithmetic or logic operation is the _________.
  1.    stack pointer
  2.    program counter
  3.    instruction pointer
  4.    accumulator
 Discuss Question
Answer: Option D. -> accumulator
Question 309. . The __________ program is used to convert mnemonic code to machine code.
  1.    debug
  2.    C++
  3.    fortran
  4.    assembler
 Discuss Question
Answer: Option D. -> assembler
Question 310. . A(n) ________________ is the time it takes a microprocessor to fetch and execute a complete instruction.
  1.    instruction cycle
  2.    machine cycle
  3.    timing cycle
  4.    write cycle
 Discuss Question
Answer: Option A. -> instruction cycle

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