Early 360 machines (Was: Front panel switches - what did they do?)

Noel Chiappa jnc at mercury.lcs.mit.edu
Wed May 25 12:01:35 CDT 2016

    > From: Jon Elson

    > the /20 was intended for very specific uses in 360 shops, and maybe as
    > an entry-level "foot in the door" to move totally tab card shops into
    > the 360 family. The only /20s I ever saw were used as offline spool
    > printers and card readers in large 360 shops.

I interned at IBM Bermuda, and they had a 360/20 as their main service bureau
machine; it had (IIRC) a card reader/punch, 4 tape drives, and a 4301
printer. When I got there, they had just gotten in a System 3 (two
single-platter hard drives, a 4301 printer, and I'm not sure what else) to
replace it.


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