1968 Texas Instruments MSI Data Book

[chip68]

Quite rare... Worth reading the item description even if you don't place a bid.

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=270040327682

Ends 10/19.

- CMW

[CPUShack]

most early puters (ie on the Apollo) were built with these TTL chips. just a glorified state machine, implemented one chip at a time, worked well.

[chip68]

RTL, to be precise (resistor-transistor logic):

http://en.wikipedia.org/wiki/Apollo_Guidance_Computer


The Kenbak-1 used TTL:

http://en.wikipedia.org/wiki/Kenbak-1


But yeah, it was like building a microprocessor from scratch... And of course, before ICs came down in price, you even had to build the logic gates yourself:

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=270038810337


At one time I had over 900 of those Control Data cards - everything from NOR gates to core memory sense amplifiers.

- CMW

[CPUShack]

yah the days when you had to choose between RTL, DTL, TTL and if you wanted highspeed ECL (and high heat)

[chip68]

[chip68]

Less than 24 hours to go...

- CMW