Lesson plan

TK80

The TK80 was a home computer produced by Microdigital Eletrônica. A clone of the Sinclair ZX80, it was introduced along with the TK82 in 1981 during the "I Feira Internacional de Informática". There were two versions, one with 1 KB RAM costing Cr$ 68,850 and another with 2 KB costing Cr$73,650. In the January 1982 issue of Micro Sistemas magazine, Tomas Roberto Kovari, Microdigital 's engineer, stated that the machines were being sold with a photocopied manual, while a printed version was being developed. Kovari estimated a potential market for 10000 machines in Brazil, with expected buyers being novelty seekers, students and self employed professionals. According to some sources, the TK80 was never commercially produced, with only prototypes existing.

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Article summary

The TK80 was a home computer produced by Microdigital Eletrônica. A clone of the Sinclair ZX80, it was introduced along with the TK82 in 1981 during the "I Feira Internacional de Informática". There were two versions, one with 1 KB RAM costing Cr$ 68,850 and another with 2 KB costing Cr$73,650. In the January 1982 issue of Micro Sistemas magazine, Tomas Roberto Kovari, Microdigital 's engineer, stated that the machines were being sold with a photocopied manual, while a printed version was being developed. Kovari estimated a potential market for 10000 machines in Brazil, with expected buyers being novelty seekers, students and self employed professionals. According to some sources, the TK80 was never commercially produced, with only prototypes existing.

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Discussion questions

  1. Summarise the article in your own words. Which single claim would you verify first, and why?
  2. Which claim in this article is most likely to be revised as the sources update? How would you check its current status?
  3. If two sources disagreed about one of these facts, what would you need in order to trust one over the other?

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