 Since a typewritten page contains much more information than a punched card (which has essentially one line of text from a page), this would offer savings all around.This seemingly simple task turned out to be much harder than anyone expected, and while CDC became a major player in the early days of OCR systems, OCR has remained a niche product to this day.Rabinow's plant in Rockville, MD was closed in 1976, and CDC left the business.