Logic circuits

What is the hexadecimal number FF in decimal?

  1. A15
  2. B255
  3. C256
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Answer: B. 255

Hexadecimal F is 15 in decimal, so FF = 15 × 16 + 15 = 255. This corresponds to the 8-bit binary number 11111111, the largest unsigned integer that 8 bits can represent.

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