Digital Electronics-Ex-OR and Ex-NOR Gates
Digital Electronics-Ex-OR and Ex-NOR Gates
1. Select the statement that best describes the parity method of error detection:
- Parity checking is best suited for detecting double-bit errors that occur during the transmission of codes from one location to another.
- Parity checking is not suitable for detecting single-bit errors in transmitted codes.
- Parity checking is best suited for detecting single-bit errors in transmitted codes.
- Parity checking is capable of detecting and correcting errors in transmitted codes.
2. A logic circuit that provides a HIGH output for both inputs HIGH or both inputs LOW is a(n):
- Ex-NOR gate
- OR gate
- Ex-OR gate
- NAND gate
3. A logic circuit that provides a HIGH output if one input or the other input, but not both, is HIGH, is a(n):
- Ex-NOR gate
- OR gate
- Ex-OR gate
- NAND gate
4. Identify the type of gate below from the equation
- Ex-NOR gate
- OR gate
- Ex-OR gate
- NAND gate
6. Parity systems are defined as either________ or ________ and will add an extra ________ to the digital information being transmitted.
- positive, negative, byte
- odd, even, bit
- upper, lower, digit
- on, off, decimal
8. Why is an exclusive-NOR gate also called an equality gate?
- The output is false if the inputs are equal.
- The output is true if the inputs are opposite.
- The output is true if the inputs are equal.
9. 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.
- Using A as the control, when A = 0, X is the same as B. When A = 1, X is the same as B.
- Using A as the control, when A = 0, X is the same as B. When A = 1, X is the inverse of B.
- Using A as the control, when A = 0, X is the inverse of B. When A = 1, X is the same as B.
- Using A as the control, when A = 0, X is the inverse of B. When A = 1, X is the inverse of B.
10. The Ex-NOR is sometimes called the ________.
- parity gate
- equality gate
- inverted OR
- parity gate or the equality gate