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  • Did you know that using ALL CAPITAL letters saved space
      • Anon (no login)
      Posted Aug 4, 2012 10:07 AM

      On certain magnetic tape storage devices, such as cassete tapes on the original IBM PC (most people bought the IBM PC with a disk drive). The original IBM PC used Frequency Shift Keying with each bit represented by a single pulse. A 1 took more time than a 0 due to a lower frequency. So ALL CAPS used less tape space due to fewer one bits.
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