English: Casio fx-140 scientific calculator with 10-digit vacuum fluorescent display. It runs on two AA batteries. Production started from 1978 and ended in 1982.
{{Information |Description={{en|1=Casio fx-140 scientific calculator with 10-digit vacuum fluorescent display. It runs on two AA batteries. Production started from 1978 and ended in 1982. }} |Source={{own}} |Author=Mk2010 |Date=2011-01-06