34,359,738,368 bits (4 gibibytes) – maximum addressable memory for the Motorola 68020 (1984) and Intel 80386 (1985), also the volume size limit for the FAT16B file system (with 64 KiB clusters) as well as the maximum file size (4 GiB-1) in MS-DOS 7.1 - 8.0. 137,438,953,472 bits (16 gibibytes).OverviewThe of data may be specified in strictly standards-conformant and multiples. The has been a commonly used unit of measure for much of the to refer to a number of. In the early days of computing, it was used for differing numbers of bits based on and This page references two kinds of entropy which are not entirely equivalent. For comparison, the is 6.02214076×10 entities per mole, based upon the number of atoms in 12 grams of isotope.