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% replaces any number of letters (la% - lake, lamp)_ replaces one letter (ca_ - car, cat)

Crossword clues for '80s IBMs 3 letters:

XTS: '80s IBM models
PCS: '80s IBM products
PCS: '80s IBMs
PCJR: '80s IBM flop nicknamed "Peanut"
PCJRS: '80s IBM desktops
PCJRS: IBM offerings of the '80s