[MRCA] Early Integrated Circuts

[KA1LHZ]

Waaaaayyyyyy back in the dark ages when I was growing up (and we had to 
carve our integrated circuits from rocks and logs), my dad worked for 
Bell and Howell in Bridgeport Conn (1970's). He brought me some control 
modules they made for process control circuits that I could play with 
(actually wire them up and make working circuits). I also remember they 
made some early integrated circuits on a ceramic substrate. They took a 
bunch of defective ones, cut the leads off, and glued them to tie tacks. 
I'm not sure the part numbers but remember they were op amps of some 
sort. I'll see if he still has some of them and what the numbers were.
Cheers & 73
DE KA1LHZ
Steve

On 01/07/2015 11:13 AM, Ray Fantini wrote:
>
> In the ongoing journey of moving forward into the past I have now 
> decided that my life won't be complete until I obtain some series 51 
> RCTL integrated circuts. My limited understanding is that they were 
> simple gates designed for missile and space applications in the early 
> sixties and have package numbers like SN51A, SN512, SN516 all the way 
> up to SN5191 So if anyone has any they would like to sell or trade or 
> any of the information regarding that family of devices please contact 
> me directly. I may have a SN516 arriving soon and although I know it's 
> a dual 2 input NAND/NOR gate would be good to have a pin out for that 
> device.
>
> The goal is to build up a little demo board with some buttons and leds 
> where you can see the gate at work. Won't be fun like gaming or being 
> on the internet or something like that but it's what I am aiming at.
>
> Ray F
>
>
>
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