Given a number of bytes of 1792-word 2200 software tracks, this will calculate
the approximate number industry-standard 8-bit bytes. This is useful
when evaluating disk space because non-2200 people usually quote in bytes.
We use KB, MB, GB and TB here to mean thousands, millions, billions and
trillions, rather than 2**10, 2**20, 2**30 and 2**40, respectively.
Because the 2200 has 9-bit bytes, the number of 2200 tracks needed to store
non-2200 data can vary slightly depending on whether the data is ASCII or
We take no notice of wasted space than can occur on a disk system because it
was designed for 8-bit bytes. For example, sometimes a 512-byte (4,096-bit)
physical disk record is used to hold 112 words (4,032 bits) of 2200 data,
thereby 'wasting' 64 bits per physical record.