HP 3000 Series I

The 3000 Series I was introduced after the 3000 Series II. The Series I was the last of the HP 3000s to come with magnetic core memory (rather than semiconductor memory). The 3000 Series I came standard with 128K memory, a 7920 hard disc, and 7970 tape drive and a 2640B terminal. The Series I ran the MPE-C operating system. It could support up to 16 terminals.