base 2 base 10 base 16 binary decimal hexadecimal 8421 0000 0 0 0001 1 1 0010 2 2 0011 3 3 0100 4 4 0101 5 5 0110 6 6 0111 7 7 1000 8 8 1001 9 9 1010 10 A 1011 11 B 1100 12 C 1101 13 D 1110 14 E 1111 15 F 0x56E48F2 0101 0110 1110 0100 1000 1111 0010 Error at 0x56E48F2 $56E48F2 H56E48F2 IP address. IPv4 4 bytes long 192.168.0.1 192.168.0.0 192.168.0.255 192.168.0.27 1100 0000 . 1010 1000 . 0000 0000 . 0001 1011 IPv6 16 bytes 0000 0000 = decimal 0 1111 1111 = decimal 255 = 0xFF 1 = bit 4 bits = nybble 8 bits = byte 16 bits = word 8 4 2 1 . 0.5 0.25 0.125 0.0625 0.03125 0 0 1 1 = 3 decimal 0 0 1 1 . 1 = 3.5 decimal 0 0 1 1 . 1 0 0 1 1 = 3.59375 decimal 2.3 0010.01001 xxxx xxxx xxxx xxxx = 16 bits 0111 1111 1111 1111 = 32,767 decimal 1111 1111 1111 1111 = -32,768 decimal 32 bits largest is ~ 2.1 billion, smallest ~-2.1 billion IDE = Integrated Development Environment RGB = Red Green Blue 8 bits Red 8 bits Green 8 bits Blue = 24 bit true color 0-255 decimal 0-255 decimal 0-255 decimal 0x0-0xFF 0x0-0xFF 0x0-0xFF bright Red = 0xFF0000 bright Green = 0x00FF00 bright Blue = 0x0000FF black = 0x000000 white = 0xFFFFFF