View Single Post
Old 12-10-2007, 06:06 AM
Grant Stockly Grant Stockly is offline
Join Date: Jan 2005
Posts: 447

Originally Posted by Cappellanus View Post
I guess I talked too soon, and found the answer to why John Blankenbaker tied the inputs to his TTL chips through a resistor to the +5 volt supply. I appreciate that nobody has yet slammed me. I guess there was reason for all those extra resistors after all. Was this obvious to everyone except me?
Is it to limit input current or prevent a latch-up? The Kenbak was designed in 70-71, so the TTL chips were pretty new.
Reply With Quote