Digital Electronics-Computers

Digital Electronics-Computers
1. Which of the following is not a basic element within the microprocessor?
  • Microcontroller
  • Arithmetic logic unit (ALU)
  • Register array
  • Control unit
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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)
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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
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4. Which bus is bidirectional?
  • Address bus
  • Control bus
  • Data bus
  • None of the above
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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
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6. The first microprocessor had a(n)________.
  • 1-bit data bus
  • 2-bit data bus
  • 4-bit data bus
  • 8-bit data bus
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7. Which microprocessor has multiplexed data and address lines?
  • 8086/8088
  • 80286
  • 80386
  • Pentium
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8. Which is not an operand?
  • Variable
  • Register
  • Memory location
  • Assembler
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9. Which is not part of the execution unit (EU)?
  • Arithmetic logic unit (ALU)
  • Clock
  • General registers
  • Flags
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10. A 20-bit address bus can locate ________.
  • 1,048,576 locations
  • 2,097,152 locations
  • 4,194,304 locations
  • 8,388,608 locations
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Digital Electronics
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