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Microdigital Eletronica

Microdigital Eletrônica was a Brazilian 1980s computer manufacturer known for locally sold home computers and Apple- and Sinclair-compatible systems.

Last updated August 26, 2026

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Overview

Microdigital Eletrônica Ltda. was a Brazilian computer company established in 1981 by brothers Jorge and Tomas Kovari. Based in São Paulo, the company participated in Brazil's early personal-computer market, a period shaped by strong demand for affordable home computers and by restrictions and commercial conditions that encouraged domestic production and local adaptation of foreign designs. The company's first product was the TK80, a computer modeled on the British Sinclair ZX80. Microdigital subsequently developed a succession of TK-branded home computers, including the TK82, TK82C, TK83, TK85, TK90X, and TK95. The brand's naming convention became closely associated with Brazilian hobbyist and home-computing culture. Its products were generally positioned as lower-cost domestic alternatives to better-known foreign machines, although many were technically based on or compatible with existing overseas designs. Microdigital reached its strongest position around 1985. Two particularly important products from this period were the TK90X, a system based on the Sinclair ZX Spectrum design, and the TK 2000/II, a personal computer offering partial compatibility with the Apple II+ at the Applesoft BASIC level. These products helped the company serve both home users interested in games and programming and customers seeking more capable personal-computer functionality. At its peak, the company reportedly employed approximately 400 people across three plants: two in São Paulo and one in Brazil's Manaus Free Trade Zone. It also used a large nationwide sales network, described in contemporary accounts as comprising more than 700 peddlers distributed throughout Brazil. This scale reflected the breadth of the domestic market and Microdigital's effort to make personal computers available beyond specialist retail channels. The company also announced or sold peripherals, software, portable-computing products, and video-game hardware. Its listed products included the TK 2000, TK-3000 IIe, TK-3000 IIe Compact, TK EXTended, the Onyx Jr. video-game system, and the Microdigital Rhythmic 2 portable keyboard. Some announced products, such as the TKS800, the TK Printer, and the Onyx ColecoVision-compatible console, were reported as vaporware or were never launched. Microdigital's software subsidiary, named Microsoft, distributed software that contemporary descriptions characterize as predominantly unauthorized copies of foreign programs. The company also used a logo identical to that of an earlier British company called Microdigital Ltd.; available reference material states that the Brazilian company was not related to that British business. Microdigital was a significant participant in Brazil's first personal-computer wave, but it did not remain an active mass-market manufacturer. Its historical importance lies in its role in adapting and distributing Sinclair- and Apple-compatible systems for Brazilian users during the 1980s, rather than in a continuing modern corporate operation.

History

Microdigital Eletrônica emerged in Brazil in 1981, founded by brothers Jorge and Tomas Kovari. Its creation coincided with the expansion of interest in personal computing and with conditions that made domestic computer manufacturing commercially significant. Rather than introducing an entirely independent computing architecture, Microdigital built much of its product identity around adaptations and clones of established foreign systems. Its first computer, the TK80, followed the design direction of the Sinclair ZX80. The company then expanded its home-computer range with models such as the TK82, TK82C, TK83, and TK85. These machines were aimed at Brazilian consumers interested in learning programming, using basic applications, and playing games. The TK designation became the central identifier of the brand's consumer-computer business. Microdigital's most important expansion came in the middle of the decade. The TK90X, introduced in 1985, was based on the Sinclair ZX Spectrum and addressed the growing popularity of Spectrum-compatible software and gaming. The same period saw the TK 2000 and TK 2000/II, personal computers that offered partial Apple II+ compatibility at the Applesoft BASIC level. This broadened the company's reach from simple home-computer users to customers seeking a more capable personal-computer platform. By around 1985, Microdigital had become a substantial Brazilian manufacturer. Reference material describes approximately 400 employees working in three plants, with two facilities in São Paulo and another in the Manaus Free Trade Zone. Its sales organization reportedly included more than 700 peddlers operating throughout Brazil. The combination of domestic manufacturing, recognizable product families, and broad distribution made Microdigital one of the visible participants in Brazil's 1980s computer market. The company continued to extend its catalog. Later products included the TK95, the TK-3000 IIe and TK-3000 IIe Compact, the TK EXTended, and various portable or peripheral concepts. Microdigital also entered adjacent categories. The Onyx was described as a ColecoVision clone that was never launched, while the Onyx Jr. appeared as a later video-game product. The company listed the TK Printer and TKS800 among products or announcements, although these were characterized as vaporware in the available reference material. It also marketed the Microdigital Rhythmic 2 Portable Keyboard. Software formed another part of the business. Through a subsidiary called Microsoft, Microdigital sold software that reference accounts describe as consisting almost entirely of pirated copies of foreign programs. This activity reflected the difficulties of software distribution and intellectual-property enforcement in the early Brazilian computer market, but it also exposed the company to the broader legal and ethical problems associated with unauthorized software duplication. Microdigital's history is also distinct from that of an earlier British company called Microdigital Ltd. Although the two companies reportedly used identical logos, the Brazilian computer manufacturer was not related to the British business. The available historical material does not provide a precise closure date, detailed ownership history, or a documented final corporate transaction. The company is therefore best understood as a defunct 1980s Brazilian computer manufacturer whose principal historical influence came from making Sinclair- and Apple-compatible machines available to Brazilian consumers during the formative years of personal computing.

  • 1987

    TK-3000 IIe Compact and TK EXTended

    [1]

    Microdigital's listed products included the TK-3000 IIe Compact and TK EXTended.

  • 1986

    TK95 and TK-3000 IIe generation

    [1]

    The product range included the TK95 and TK-3000 IIe, extending the brand's home- and personal-computer lines.

  • 1985

    Peak expansion and major product launches

    [1]

    Around 1985, Microdigital reached its reported peak, launched the TK90X and TK 2000/II, and operated three plants with approximately 400 employees.

  • 1985

    Onyx Jr. listed

    [1]

    Microdigital expanded into video-game hardware with the Onyx Jr.

  • 1984

    TK 2000 introduced

    [1]

    The company entered the personal-computer segment with the TK 2000.

  • 1981

    Company founded

    [1]

    Brothers Jorge and Tomas Kovari established Microdigital Eletrônica in Brazil.

  • 1981

    TK80 introduced

    [1]

    Microdigital's first computer, the TK80, was released as a design based on the Sinclair ZX80.

Products and positioning

A Brazilian domestic-computer manufacturer offering affordable home and personal computers based on or compatible with influential foreign systems, particularly Sinclair and Apple designs.

  • Home computer · 1981

    TK80

    Microdigital's first computer, introduced in 1981. It was modeled on the British Sinclair ZX80 and established the TK family as the company's central home-computing line in Brazil.

  • Home computers · 1981

    TK82, TK82C, TK83 and TK85

    These successive TK-series home computers expanded Microdigital's Sinclair-oriented product range during the early 1980s. They targeted Brazilian users seeking relatively accessible machines for programming, home use, and games.

  • Home computer · 1985

    TK90X

    Introduced in 1985, the TK90X was based on the Sinclair ZX Spectrum. It was one of Microdigital's most prominent products and connected the company to the expanding Brazilian market for Spectrum-compatible computing and software.

  • Personal computer · 1985

    TK 2000/II

    The TK 2000/II was a personal computer offering partial compatibility with the Apple II+ at the Applesoft BASIC level. It represented Microdigital's move beyond basic home computers into a more capable personal-computing segment.

  • Personal computers · 1986

    TK-3000 IIe and TK-3000 IIe Compact

    These later personal computers formed part of Microdigital's Apple-oriented product range. The Compact model extended the line with a more compact configuration, although the available reference does not provide detailed technical specifications.

  • Home computer · 1986

    TK95

    The TK95 was a later entry in Microdigital's TK home-computer family, listed among the company's 1980s products. Detailed hardware specifications and commercial performance are not established in the supplied reference material.

  • Video-game system · 1985

    Onyx Jr.

    The Onyx Jr. was Microdigital's video-game product. It followed the company's planned Onyx console, described as a ColecoVision clone that was never launched.

  • Portable keyboard

    Microdigital Rhythmic 2 Portable Keyboard

    A portable keyboard product associated with Microdigital's broader range of computing and electronic accessories. The supplied references do not provide further technical or commercial details.

Brand decisions

  • 1985

    Launch of the TK90XProduct launch

    Background

    Microdigital was expanding its home-computer business during the Brazilian market's 1980s growth, while Sinclair-compatible products had strong relevance for hobbyists and game users.

    Action taken

    The company released the TK90X, a computer based on the Sinclair ZX Spectrum.

    Aftermath

    The TK90X became one of Microdigital's best-known products and strengthened its association with locally available Spectrum-compatible computing.

  • 1985

    Launch of the TK 2000/IIProduct launch

    Background

    Microdigital sought to serve users who wanted a personal computer with capabilities beyond its simpler home-computer models.

    Action taken

    The company introduced the TK 2000/II, which was partially compatible with the Apple II+ at the Applesoft BASIC level.

    Aftermath

    The product broadened Microdigital's portfolio into Apple-compatible personal computing, although the available sources do not quantify its sales or market share.

Sources2 sources

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