Computers Questions and Answers
Digital Electronics aptitude questions and answers are an essential part of computer and electronics engineering preparation. These questions test a candidate’s understanding of number systems, logic gates, Boolean algebra, and circuit design — all key concepts for campus placements and competitive exams. Practicing aptitude questions with solutions PDF helps strengthen problem-solving ability in topics like combinational and sequential circuits. Whether you’re preparing for Infosys, Wipro, TCS, or GATE, mastering digital electronics questions with answers ensures better accuracy and confidence. This section provides well-explained aptitude test practice questions designed to improve your technical reasoning and analytical thinking.
Computers
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35 questions
1. Which of the following is not a basic element within the microprocessor?
- Microcontroller
- Arithmetic logic unit (ALU)
- Register array
- Control unit
2. Which method bypasses the CPU for certain types of data transfer?
- Software interrupts
- Interrupt-driven I/O
- Polled I/O
- Direct memory access (DMA)
3. Which of the following is not an enhancement to the Pentium that was unavailable in the 8086/8088?
- "Pipelined" architecture
- Expansion of cache memory
- Inclusion of an internal math coprocessor
- Data/address line multiplexing
4. Which bus is bidirectional?
- Address bus
- Control bus
- Data bus
- None of the above
5. DMA is particularly suited for data transfer between the ________.
- disk drive and CPU
- disk drive and RAM
- disk drive and ROM
- disk drive and I/O
6. The first microprocessor had a(n)________.
- 1-bit data bus
- 2-bit data bus
- 4-bit data bus
- 8-bit data bus
7. Which microprocessor has multiplexed data and address lines?
- 8086/8088
- 80286
- 80386
- Pentium
9. Which is not part of the execution unit (EU)?
- Arithmetic logic unit (ALU)
- Clock
- General registers
- Flags
10. A 20-bit address bus can locate ________.
- 1,048,576 locations
- 2,097,152 locations
- 4,194,304 locations
- 8,388,608 locations