Computers
Companies
- Timex Computer Corporation
  Timex brought the Timex Sinclair 1000, 1500 and 2068 to eager users in the early 1980s.
- Timex (TMX) Portugal
  The Timex facility in Portugal designed and produced computers, disk drive systems and more.
- Sinclair Research Ltd.
  Sinclair produced the first home computer available for under $200 and continued to develop innovative, unique home computers.
- All Companies
  All the companies that supported the Sinclair and Timex/Sinclair users in the United States.
Products
- Hardware
  Physical expansions to the Timex/Sinclair computers, including disk drives, modems, printers, RAM and more.
- Software
  Applications that run on the Timex/Sinclair computers, spanning from art and entertainment to business to games to home maintenance.
- Accessories & Miscellaneous
  Add-ons or products that don't strictly fall in the hardware or software category.
Publications
- Books
  All the books, commercial and small press, published about the Timex/Sinclair computers.
- Periodicals
  Find all the periodicals and articles about Timex/Sinclair computers, community and more here.
- Documents
  Manuals, press releases, and other documents.
Community
- People
  Learn about the people who made up the Timex/Sinclair community.
- User Groups
  User groups were a popular way to meet and network with other users.
- Events
  The community organized a number of events over the years.
Blog
About
- What’s New?
  Recent updates to the website.
- How You Can Help
  Do you have materials we haven't archived? Want to help the project?
- Shop
  Find add-ons for your Timex/Sinclair computer, new software, accessories, books, t-shirts and more.
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- Privacy Policy
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2K RAM Upgrade

Powertronix Electronics

Platform(s): ZX81

Date: 1983

Price: $11.95

Internal upgrade; replaces existing RAM chips.

SYNC v3 n1 p. 71

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2K RAM Upgrade

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