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- Question
Resistors?usually 300 Ω apiece?inserted between a decoder and a 7-segment display are ________.
Options- A. pull-up resistors to keep logic HIGH when the input is open
- B. sense resistors to enable a test of logic levels
- C. current limiting resistors for the 7-segment display
- D. surge resistors to prevent damage from power-line variations
- Correct Answer
- current limiting resistors for the 7-segment display
- 1. Adding a zero to the leftmost bit of an ASCII code is called ________.
Options- A. extra zero
- B. zero padding Discuss
- 2. A complete alphanumeric code would include 26 lowercase letters, 26 uppercase letters, 10 numeric digits, 7 punctuation marks, and anywhere from ________ to ________ other characters.
Options- A. 5, 10
- B. 10, 15
- C. 10, 20
- D. 20, 40 Discuss
- 3. Hexadecimal AA is ________ in decimal.
Options- A. 16510
- B. 17010
- C. 18610
- D. 17616 Discuss
- 4. Hexadecimal 16 is ________ in decimal.
Options- A. 3210
- B. 2210
- C. 2510
- D. 2710 Discuss
- 5. Hexadecimal 44 is ________ in binary.
Options- A. 01000100
- B. 10011010
- C. 01011000
- D. 10001100 Discuss
- 6. The MSB of 11001 is ________.
Options- A. 1
- B. 1100
- C. C
- D. 1916 Discuss
- 7. The ________ code represents alphanumeric characters as seven-bit binary numbers.
Options- A. ASCII
- B. octal
- C. alphanumeric
- D. Boy Scout Discuss
- 8. The Ex-NOR is sometimes called the equality gate.
Options- A. True
- B. False Discuss
- 9. The odd/even parity system would require a sixth bit to be added to a 4-bit system.
Options- A. True
- B. False Discuss
- 10. In an exclusive-OR, both inputs cannot be HIGH to provide a HIGH output.
Options- A. True
- B. False Discuss
Number Systems and Codes problems
Search Results
Correct Answer: zero padding
Correct Answer: 20, 40
Correct Answer: 17010
Correct Answer: 2210
Correct Answer: 01000100
Correct Answer: 1
Correct Answer: ASCII
Correct Answer: True
Correct Answer: False
Correct Answer: True
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