Expensive Typewriter was a text editing program that ran on the
DEC PDP-1 computer that had been recently delivered at
MIT. Since it could drive a
Friden Flexowriter (a
letter-quality printer), it was arguably the first
word processing program although it definitely was not
WYSIWYG, having no
CRT display. It was written and improved between 1961 and 1962 by
Steve Piner and
L. Peter Deutsch.
It was called "Expensive Typewriter" because at the time the PDP-1 cost a small fortune (approximately $100,000 USD) and as a joke on another earlier editor called "Colossal Typewriter".
See also