Did you know that using ALL CAPITAL letters saved space

by Anon (no login)


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.

Posted on Aug 4, 2012, 10:07 AM

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