The 8 appears at the beginning of the film in Jospeh's office where it appears to be scanning and processing text documents.
Text processing is reasonable enough, but the scanner (and presumably OCR) are a little far fetched.
Year of feature (shown above):
Not far fetched, I have a PDP8/E that was used for scanning and OCR. ( ECRM, company still exists) Still have all the software, special oomnibus boards, but nor the scanner itself