0xFB 是一个16进制数，转换为二进制数的过程如下：
十六进制转二进制
每个十六进制数字对应4位二进制数：
- 0x00 = 0000
- 0x01 = 0001
- 0x02 = 0010
- 0x03 = 0011
- 0x04 = 0100
- 0x05 = 0101
- 0x06 = 0110
- 0x07 = 0111
- 0x08 = 1000
- 0x09 = 1001
- 0x0A = 1010
- 0x0B = 1011
- 0x0C = 1100
- 0x0D = 1101
- 0x0E = 1110
- 0x0F = 1111
- 0x10 = 10000
- 0x11 = 10001
- 0x12 = 10010
- 0x13 = 10011
- 0x14 = 10100
- 0x15 = 10101
- 0x16 = 10110
- 0x17 = 10111
- 0x18 = 11000
- 0x19 = 11001
- 0x1A = 11010
- 0x1B = 11011
- 0x1C = 11100
- 0x1D = 11101
- 0x1E = 11110
- 0x1F = 11111
- 0x20 = 100000
- 0x21 = 100001
- 0x22 = 100010
- 0x23 = 100011
- 0x24 = 100100
- 0x25 = 100101
- 0x26 = 100110
- 0x27 = 100111
- 0x28 = 101000
- 0x29 = 101001
- 0x2A = 101010
- 0x2B = 101011
- 0x2C = 101100
- 0x2D = 101101
- 0x2E = 101110
- 0x2F = 101111
- 0x30 = 110000
- 0x31 = 110001
- 0x32 = 110010
- 0x33 = 110011
- 0x34 = 110100
- 0x35 = 110101
- 0x36 = 110110
- 0x37 = 110111
- 0x38 = 111000
- 0x39 = 111001
- 0x3A = 111010
- 0x3B = 111011
- 0x3C = 111100
- 0x3D = 111101
- 0x3E = 111110
- 0x3