Hello--
As one of the first programs of its kind, IBM's ECAP (Electronic-Circuit Analysis Program) included many of the features found in modern analysis programs
(e.g., TINA) and a user-interface that's painful by today's standards (punched cards, anyone?). If you're curious about ECAPs innards and applications, I have a book for you.
I have one copy of "IBM Electronic Circuit Analysis Program: Techniques and
Applications" by Randall Jensen and Mark Lieberman; published by Prentice-Hall,
Englewood Cliffs, NJ, 1968 first edition hardcover, 402 pp.. EX-LIBRARY copy
in good condition (card pocket, spine label, library markings). Library of
Congress catalog 68-18515.
I'm asking $5.00 which includes USPS media-mail postage and a cuppa coffee
for yours truly.
Questions welcomed, PayPal honored.
73--
Brad AA1IP