Golf-ball Printer: N. The IBM 2741, A Slow But Letter-quality Printing Device And Terminal Based On The IBM Selectric Typewriter.

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:golf-ball printer: n. The IBM 2741, a slow but letter-quality
printing device and terminal based on the IBM Selectric
typewriter. The `golf ball' was a little spherical frob bearing
reversed embossed images of 88 different characters arranged on
four parallels of latitude; one could change the font by swapping
in a different golf ball. This was the technology that enabled APL
to use a non-EBCDIC, non-ASCII, and in fact completely non-standard
character set. This put it 10 years ahead of its time --- where it
stayed, firmly rooted, for the next 20, until character displays
gave way to programmable bit-mapped devices with the flexibility to
support other character sets.
-- The AI Hackers Dictionary

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