UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Retro computer homebrew: Orton Karenbak-1 computer

wireless_john · 18th Jan 2019, 5:47 pm

Karen, I've spent all afternoon on this looking at components etc and what I have in my junk boxes.

1. I have most of the ICs but not HC family, only LS types. They should work OK do you think, at the expense of a bit more power?

2. I don't have 74LS4040 IC 7 and 17, and they don't seem to exist. 74HC4040 seems readily available so is it OK to mix them with 74LS ?

I already have a nice project box in my "come in handy" pile. Looks like it finally has!

Regards

John

18th Jan 2019, 5:47 pm	#30
wireless_john Heptode Join Date: Apr 2011 Location: Gosport, Hampshire, UK. Posts: 605	Re: Retro computer homebrew: Orton Karenbak-1 computer Karen, I've spent all afternoon on this looking at components etc and what I have in my junk boxes. 1. I have most of the ICs but not HC family, only LS types. They should work OK do you think, at the expense of a bit more power? 2. I don't have 74LS4040 IC 7 and 17, and they don't seem to exist. 74HC4040 seems readily available so is it OK to mix them with 74LS ? I already have a nice project box in my "come in handy" pile. Looks like it finally has! Regards John __________________ GQRP Club 4704 - BVWS Member