EmbeddingGemma 2: an open, lightweight multimodal embedding model
deepmind.google·6d ago
AI Engineering
Lobsters·Aug 10·5 min read
The Early Days: A History of Interactive Computing
TL;DR
The PDP-11, launched by DEC in 1970, revolutionized computing with its 16-bit architecture and orthogonal instruction set, influencing future microprocessor designs. It also served as the foundation for Unix and shaped modern operating systems, including Windows NT.
✦ Why It Matters
Consider how the design principles of the PDP-11 can inform your current software architecture decisions.
Key Takeaways
- Explore the influence of the PDP-11 on modern microprocessor designs.
- Understand the relationship between Unix and the PDP-11 for better OS development.
- Consider the architectural decisions made in the PDP-11 when designing new systems.
- Investigate how RSX-11M's features could enhance current multi-user systems.
Full Summary
In 1970, Digital Equipment Corporation (DEC) introduced the PDP-11, a 16-bit computer that featured an orthogonal instruction set, making programming significantly easier. It had eight general-purpose registers and introduced the Unibus, simplifying peripheral integration.
The PDP-11's design influenced major architectures like Intel's x86 and Motorola's 68000. Unix, developed by Ken Thompson and Dennis Ritchie, was first ported to the PDP-11, leading to a close relationship between the operating system and the hardware.
The C programming language was also tailored for the PDP-11, reflecting its architecture in its syntax. Additionally, DEC's RSX-11M operating system offered a different vision of computing, which later influenced the design of Windows NT.
Over 600,000 PDP-11 units were sold, impacting various fields from laboratories to spacecraft.