virtualhub.eu.org/docs/start-here/dec/pdp11.md

---
keywords: ["PDP-11", "DEC", "Start Here", "VirtualHub"]
description: "PDP-11 operating systems made by DEC."
sidebar_position: 3
sidebar_label: PDP-11
---

# DEC PDP-11 Operating Systems

These operating systems were made by [DEC](https://en.wikipedia.org/wiki/Digital_Equipment_Corporation) for their [PDP-11](https://en.wikipedia.org/wiki/PDP-11) computers.

- [! CAPS-11](/1970s/1970/caps-11/)
- [! DOS-11](/1970s/1970/dos-11/)
- [! RSTS-11 v4B](/1970s/1975/rsts-11-v4b/)
- [! RT-11 v2](/1970s/1975/rt-11-v2/)