Research Machines Limited, Link Timeline History by Era and Device

Research Machines (now RM plc) has a long-standing history as a primary provider of technology for the UK education sector. Founded in 1973, the company transitioned from a hobbyist component supplier to a leading manufacturer of educational microcomputers and networking systems. 

Overview of Research Machines “LINK”

The LINK designation primarily referred to the RM Link 480Z, introduced in 1982. It was designed as a lower-cost, diskless network station that could “link” into a chain, typically using a more powerful 380Z as a file server. This system was one of three chosen for the UK government’s 1982 Educational Scheme. 

Timeline History by Era and Device

The Founding Era (1973–1976)

  • 1973: Founded as Research Machines Limited in Oxford by Mike Fischer and Mike O’Regan.
  • 1974: Operated under the name Sintel, a mail-order supplier of electronic components for hobbyists. 

The Z80 Era (1977–1984)

  • 1977: Launched the RML 380Z, an 8-bit microcomputer based on the Zilog Z80 processor. It typically ran the CP/M operating system and was often housed in a distinctive large black metal case.
  • 1982: Introduced the RM Link 480Z.
    • Purpose: Designed as a diskless network node for schools.
    • Networking: Used the proprietary CHAIN Network or Z-Net to connect to a 380Z file server.
    • Hardware: Featured a Z80 CPU and up to 256 KB of bank-switched RAM. Early models had black metal cases, later replaced by cream plastic. 

The Nimbus & PC Transition (1985–1990s) 

  • 1985: Launched the RM Nimbus PC-186, using the Intel 80186 processor. While not fully IBM-compatible, it could run early versions of Microsoft Windows (up to 3.0).
  • 1986: Released the RM AX (using the Intel 80286), often used as a file server for Nimbus networks.
  • Late 1980s: Introduced the M Series (PC-286/386) and S Series (PC-386 and later), which were fully IBM PC compatible. 

The PC Era & Diversification (1994–Present)

  • 1994: Floated on the London Stock Exchange as RM plc.
  • 1997: Introduced the C Series of computers for schools.
  • 2003: Launched the F Series (blue chassis) pre-installed with Windows XP.
  • 2010: Released a new line of black and silver RM computers for Windows 7.
  • Current: RM has pivoted from hardware manufacturing to becoming a global EdTech solutions provider, focusing on digital assessment (RM Ava) and managed IT services.

Research Machines Limited, Link Timeline History by Era and Device

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Author: Mark Whitfield

Welcome to my site! After graduating in Computing in 1990, I accepted a position as a programmer at a Runcorn based software house specialising in electronic banking software, namely sp/ARCHITECT-BANK on Tandem Computers (now HPE NonStop). This was before the internet became more prevalent and so the notion of enabling desktop access to company accounts for inter-account transfers and book keeping was still quite a cutting edge idea (and smartphones only ever hinted at in Space 1999). The company was called The Software Partnership (which was taken over by Deluxe Data in 1994). I spent 5 years in Runcorn developing code for SP/ARCHITECT for various banks like TSB, Bank of Scotland, Rabobank and Girofon (Denmark) to name but a few. I then moved onto a software house in Salford Quays for further bank facing projects. After a further 23 years in the IT industry and now a Senior IT Project Manager (both Agile and Waterfall delivery), I thought I would echo out my Career Profile in this corner of the internet for quick and easy access.

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