Interesting - wonder how durable that 8-track tape is in space to keep rewriting 64 KB data to it.
Without seeing this, I'd have been thinking the oldest satellite would have encompassed Intel's 486 processors as I think they were used at some point.
I believe it was the Intel 386EX (embedded 386) that was used in the satellites.https://en.wikipedia.org/wiki/Intel_80386EX
As an interesting side-note, Intel was manufacturing 386 and 486 CPUs up until 2007.
Back on ground, I recall reading a little while ago about some small-mid sized business somewhere in the States, that would handle either the payroll or accounting system via punch cards still.
Update, just found the web link, it was the IBM 402 from 1948: http://www.pcworld.com/article/249951/computers/if-it-aint-broke-dont-fix-it-ancient-computers-in-use-today.html
The U.S. nuclear program is still operated by 8-inch diskettes. While I'm sure this is concerning to some degree, regarding bit-rot, it's quite secure.http://www.npr.org/sections/thetwo-way/ ... oppy-disks