0xFF Turn Decimal

Source: Internet
Author: User

Data at the beginning of 0x represents hexadecimal, in hexadecimal, a, B, C, D, E, F these five letters represent 10, 11, 12, 13, 14, 15,0xff to decimal 255 respectively.

0xff=15*16^1+15*16^0=240+15=255

0xFF to binary and turn to decimal:
0xff=11111111=2^8-1=255

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