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Digital Electronics
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Interfacing to the Analog World
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Question
If the same analog signal is to be converted to an 8-bit resolution using a counter-ramp ADC, how many comparator circuits would be used?
Options
A. 1
B. 8
C. 127
D. 255
Correct Answer
1
More questions
1. How many 2K × 8 ROM chips would be required to build a 16K × 8 memory system?
Options
A. 2
B. 4
C. 8
D. 16
Show Answer
Scratch Pad
Discuss
Correct Answer: 8
2. Which of the following memories uses a MOS capacitor as its memory cell?
Options
A. SRAM
B. DRAM
C. ROM
D. FIFO
Show Answer
Scratch Pad
Discuss
Correct Answer: DRAM
3. The checksum method is used to test ________.
Options
A. ROM
B. EEPROM
C. FPLA
D. RAM
Show Answer
Scratch Pad
Discuss
Correct Answer: ROM
4. In a register stack, data moves up but not down.
Options
A. True
B. False
Show Answer
Scratch Pad
Discuss
Correct Answer: False
5. The decimal number for octal 74
8
is ________.
Options
A. 74
B. 60
C. 22
D. 62
Show Answer
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Discuss
Correct Answer: 60
6. What is the resultant binary of the decimal problem 49 + 01 =?
Options
A. 01010101
B. 00110101
C. 00110010
D. 00110001
Show Answer
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Discuss
Correct Answer: 00110010
7. Data transfer from I/O to external data memory can only be done with the MOVX command.
Options
A. True
B. False
Show Answer
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Discuss
Correct Answer: True
8. What is the decimal value of 2
3
?
Options
A. 2
B. 4
C. 6
D. 8
Show Answer
Scratch Pad
Discuss
Correct Answer: 8
Explanation:
2
3
= 2*2*2=8
9. Which type of ROM can be erased by UV light?
Options
A. ROM
B. mask ROM
C. EPROM
D. EEPROM
Show Answer
Scratch Pad
Discuss
Correct Answer: EPROM
10. How many bits are in an ASCII character?
Options
A. 16
B. 8
C. 7
D. 4
Show Answer
Scratch Pad
Discuss
Correct Answer: 7
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