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Digital Electronics
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Computers
Comments
Question
Which of the following is not a computer functional block?
Options
A. Analog-to-digital converter
B. Central-processing unit
C. Memory
D. Input/output ports
Correct Answer
Analog-to-digital converter
Computers problems
Search Results
1. Which of the following is not an enhancement to the Pentium that was unavailable in the 8086/8088?
Options
A. "Pipelined" architecture
B. Expansion of cache memory
C. Inclusion of an internal math coprocessor
D. Data/address line multiplexing
Show Answer
Scratch Pad
Discuss
Correct Answer: Data/address line multiplexing
2. The first microprocessor had a(n)________.
Options
A. 1-bit data bus
B. 2-bit data bus
C. 4-bit data bus
D. 8-bit data bus
Show Answer
Scratch Pad
Discuss
Correct Answer: 4-bit data bus
3. With interrupt-driven I/O, if two or more devices request service at the same time, ________.
Options
A. the device closest to the CPU gets priority
B. the device that is fastest gets priority
C. the device assigned the highest priority is serviced first
D. the system is likely to crash
Show Answer
Scratch Pad
Discuss
Correct Answer: the device assigned the highest priority is serviced first
4. The process of jointly establishing communication is called ________.
Options
A. DMA
B. bidirectional addressing
C. multiplexing
D. handshaking
Show Answer
Scratch Pad
Discuss
Correct Answer: handshaking
5. A port can be ________.
Options
A. strictly for input
B. strictly for output
C. bidirectional
D. all of the above
Show Answer
Scratch Pad
Discuss
Correct Answer: all of the above
6. A 20-bit address bus can locate ________.
Options
A. 1,048,576 locations
B. 2,097,152 locations
C. 4,194,304 locations
D. 8,388,608 locations
Show Answer
Scratch Pad
Discuss
Correct Answer: 1,048,576 locations
7. Polled I/O works best when ________.
Options
A. there are no priority considerations
B. priority considerations are frequent
C. the polling rate exceeds 1000 s
D. the polling rate is below 1000 s
Show Answer
Scratch Pad
Discuss
Correct Answer: there are no priority considerations
8. Which microprocessor has multiplexed data and address lines?
Options
A. 8086/8088
B. 80286
C. 80386
D. Pentium
Show Answer
Scratch Pad
Discuss
Correct Answer: 8086/8088
9. The voltage levels used to represent binary values (0 and 1) in a digital system are nearly equal in value.
Options
A. True
B. False
Show Answer
Scratch Pad
Discuss
Correct Answer: False
10. Transistor-transistor logic (TTL) uses the bipolar transistor as its main circuit element.
Options
A. True
B. False
Show Answer
Scratch Pad
Discuss
Correct Answer: True
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