IBM 5120 Computing System (5110 model 3)
This is a weighty predecessor to the IBM PC (5150) which was launched in 1981. The 5120 on the other hand was rolled out in February 1980 and featured dual 8 inch floppy drives. In 1975, the same year as the MITS Altair, the IBM 5100 was the first "personal" system and featured a tape drive and large cabinet. The 5110 followed and it and the 5100 featured an APL language support option.
Thanks Carol Christy for the donation of this wonderful historic system, a true "missing link" before IBM adopted the "open architecture" of the IBM PC 5150.
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