The Honeywell 316 was built in 1969. It came after the DDP-516 as a cheaper alternative. The 316 was significant in the ARPANET. Read more on the DDP-516 page. Other uses of the 316 were industrial process control and data acquisition.
Another significance of the 316 was that Charles Moore wrote the first complete stand-alone version of Forth programming language on one.
This H316 is the Ruggedized version.