Hello! I am new to this site and registered since I am building a Newton NTI replica. It will probably take some time to get it finished, but I have been able to pull a few components from two 1976-1977 boards, which was a good start! I am still missing most of the sockets, so if someone have a few C8414 or C8416 I am interested.
Anyway, this post was not going to be about me, but about the Apple 1 ICs. I have Mike's BOM and have been collecting based on that. Yesterday an Apple 1 was sold at Christies auction house, and I was able to grab pictures of that machine. One thing I noticed is that it did not use 74161, but has 9316PC (Fairchild) in its place. After checking a few of the Apple 1's in the registry, it seems like many of the pre-NTI have this component in the 74161 socket (the pictures are boarderline with respect to resolving the number, but its a 4-character number not 5). As for the NTI boards I have not been able to determine the number, but it looks like a Signetics component.
So was this a common replacement or did it come from Apple that way? Was the 9316 also used in the NTI boards?
The Apple 1 that just got sold:
Edit: Sorry for the double post. The first time it didn't appear for some reason, but pressing "back" on the browser reloaded the edit page so I could post the first post. Unfortunately it appeared as a new topic. I have no idea on how to delete the empty double post here..