"In the field of computing that's not bad for a 60's technology!"
Well... not exactly, most technologies from that time 1960s are still in use. Semiconductor DRAM is one example which is still the most common form of RAM in computers which use more than 32 Megabytes of it. In a way even flash memory borrows its core idea from DRAM.
The same goes for operating systems. Unix lives on in the form of the BSDs and Linux. Multics lives on in Windows and Systemd. People still use Maxima on a daily basis.