Number Systems and Codes problems
- 1. Alphanumeric codes should include as a minimum:
Options- A. the capacity to represent the alphabet upper- and lowercase characters and the decimal numbers in a straight binary format.
- B. the capacity to code all possible decimal numbers in a direct octal representation of BCD codes.
- C. the alphabet upper- and lowercase letters, the decimal digits, the seven punctuation marks, and other characters or symbols.
- D. the ability to represent decimal numbers greater than 12810 in a straight binary format. Discuss
Correct Answer: the alphabet upper- and lowercase letters, the decimal digits, the seven punctuation marks, and other characters or symbols.
- 2. Convert the following hexadecimal number to decimal.
1CF16
Options- A. 463
- B. 4033
- C. 479
- D. 4049 Discuss
Correct Answer: 463
- 3. Convert the following decimal number to BCD.
469
Options- A. 100101101000
- B. 010001101001
- C. 100001101001
- D. 100101100100 Discuss
Correct Answer: 010001101001
- 4. Digital electronics is based on the ________ numbering system.
Options- A. decimal
- B. octal
- C. binary
- D. hexadecimal Discuss
Correct Answer: binary
- 5. Convert the following decimal number to hexadecimal.
74
Options- A. A416
- B. B416
- C. 4A16
- D. 4B16 Discuss
Correct Answer: 4A16
- 6. The binary number for F3A16 is ________.
Options- A. 111100111010
- B. 111100111110
- C. 000000111010
- D. 000011000100 Discuss
Correct Answer: 111100111010
- 7. If a typical PC uses a 20-bit address code, how much memory can the CPU address?
Options- A. 20 MB
- B. 10 MB
- C. 1 MB
- D. 580 MB Discuss
Correct Answer: 1 MB
- 8. Convert decimal 213 to binary.
Options- A. 11001101
- B. 11010101
- C. 01111001
- D. 11100011 Discuss
Correct Answer: 11010101
- 9. A decimal 11 in BCD is ________.
Options- A. 00001011
- B. 00001100
- C. 00010001
- D. 00010010 Discuss
Correct Answer: 00010001
- 10. Convert binary 111111110010 to hexadecimal.
Options- A. EE216
- B. FF216
- C. 2FE16
- D. FD216 Discuss
Correct Answer: FF216
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