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Digital Electronics
‣
Ex-OR and Ex-NOR Gates
Comments
Question
A logic circuit that provides a HIGH output for both inputs HIGH or both inputs LOW is a(n):
Options
A. Ex-NOR gate
B. OR gate
C. Ex-OR gate
D. NAND gate
Correct Answer
Ex-NOR gate
Ex-OR and Ex-NOR Gates problems
Search Results
1. Determine odd parity for each of the following data words:
1011101 11110111 1001101
Options
A.
P
= 1,
P
= 1,
P
= 0
B.
P
= 0,
P
= 0,
P
= 0
C.
P
= 1,
P
= 1,
P
= 1
D.
P
= 0,
P
= 0,
P
= 1
Show Answer
Scratch Pad
Discuss
Correct Answer:
P
= 0,
P
= 0,
P
= 1
2. Why is an exclusive-NOR gate also called an equality gate?
Options
A. The output is false if the inputs are equal.
B. The output is true if the inputs are opposite.
C. The output is true if the inputs are equal.
Show Answer
Scratch Pad
Discuss
Correct Answer: The output is true if the inputs are equal.
3. The decimal number 188 is equal to the binary number ________.
Options
A. 10111100
B. 0111000
C. 1100011
D. 1111000
Show Answer
Scratch Pad
Discuss
Correct Answer: 10111100
4. Convert 731
16
to decimal.
Options
A. 216.4
B. 985
C. 3D9
D. 1841
Show Answer
Scratch Pad
Discuss
Correct Answer: 1841
5. Convert 11001001
2
(binary) to decimal.
Options
A. 201
B. 2001
C. 20
D. 210
Show Answer
Scratch Pad
Discuss
Correct Answer: 201
6. Parity systems are defined as either________ or ________ and will add an extra ________ to the digital information being transmitted.
Options
A. positive, negative, byte
B. odd, even, bit
C. upper, lower, digit
D. on, off, decimal
Show Answer
Scratch Pad
Discuss
Correct Answer: odd, even, bit
7. How is odd parity generated differently from even parity?
Options
A. The first output is inverted.
B. The last output is inverted.
Show Answer
Scratch Pad
Discuss
Correct Answer: The last output is inverted.
8. Show from the truth table how an exclusive-OR gate can be used to invert the data on one input if the other input is a special control function.
Options
A. Using
A
as the control, when
A
= 0,
X
is the same as
B
. When
A
= 1,
X
is the same as
B
.
B. Using
A
as the control, when
A
= 0,
X
is the same as
B
. When
A
= 1,
X
is the inverse of
B
.
C. Using
A
as the control, when
A
= 0,
X
is the inverse of
B
. When
A
= 1,
X
is the same as
B
.
D. Using
A
as the control, when
A
= 0,
X
is the inverse of
B
. When
A
= 1,
X
is the inverse of
B
.
Show Answer
Scratch Pad
Discuss
Correct Answer: Using
A
as the control, when
A
= 0,
X
is the same as
B
. When
A
= 1,
X
is the inverse of
B
.
9. A logic circuit that provides a HIGH output if one input or the other input, but not both, is HIGH, is a(n):
Options
A. Ex-NOR gate
B. OR gate
C. Ex-OR gate
D. NAND gate
Show Answer
Scratch Pad
Discuss
Correct Answer: Ex-OR gate
10. Select the statement that best describes the parity method of error detection:
Options
A. Parity checking is best suited for detecting double-bit errors that occur during the transmission of codes from one location to another.
B. Parity checking is not suitable for detecting single-bit errors in transmitted codes.
C. Parity checking is best suited for detecting single-bit errors in transmitted codes.
D. Parity checking is capable of detecting and correcting errors in transmitted codes.
Show Answer
Scratch Pad
Discuss
Correct Answer: Parity checking is best suited for detecting single-bit errors in transmitted codes.
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