Didn't you RTFA? They were built by Cisco.
RTFA?... but isn't this slashdot?
... all of them? Seriously the inclusion of a trained Shakespearian actor (Stewart) was the only saving grace of that branch-off of TOS.
come on... it's not like the series didn't have any redeeming qualities at all... is it?
Think of it! With VLSI we can pack 100 ENIACs in 1 sq. cm.!