Pravetz computers

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Pravetz computers
Type Public
Industry Computer hardware
Electronics
Founded 1979 (Pravets)
/restored 2013/
Founders Ivan Marangozov
Headquarters Pravets, Bulgaria , now Sofia, Bulgaria
Area served Bulgaria
Key people Boyko Vuchev
Chairman and CEO
Products Desktops, servers, notebooks, netbooks
Website www.pravetz.bg

Pravetz (Правец in the original Cyrillic, series 8 and series 16) were Bulgarian computers, manufactured mainly in the town of Pravetz. Some components and software were produced in Stara Zagora, Plovdiv and other Bulgarian cities.

History[edit]

The first Bulgarian-made personal computer, IMKO-1, was a prototype of the Pravetz computers that was developed by Ivan Vassilev Marangozov,[1] who was often accused of just cloning the Apple II. A few early models were produced at the ITKR (pronounced ee-teh-kah-reh, Institute of Technical Cybernetics and Robotics), a section of the Bulgarian Academy of Sciences. Industrial production in Pravetz started shortly after.[2]

Pravetz computers were of major importance in the economy of the Comecon.

In October 2013 a private owned company claiming in their web site to have rights on the trademark, have misleadingly announced that "Pravetz Computers are returning to market". In fact that company has nothing to do with the real "Pravetz" computers and industry in this article.

Model line[edit]

8-bit architecture[edit]

Except for the Oric-derived 8D (and possibly the IMKO-1, see Talk Page), all the Pravetz 8-bit systems are largely compatible with the popular Apple II and its successors, but they offer Cyrillic fonts and some other improvements on the Apples.

Pravetz 82 computer in school class in Russia
  • IMKO-1 — First Bulgarian personal computer. used a clone of the 6502 CPU 1 MHz CPU, and 16/4 KB RAM/ROM. The storage media is a cassette recorder.
  • Pravetz 82 (IMKO-2) - 82 is model year. BASIC interpreter, RAM/ROM - 48/12 KB; CPU Synertek 6502 /1 MHz. The storage is improved due to one or (optional) two 5.25" floppy disk drive(s).
  • Pravetz 8М - Integrated second CPU Zilog Z80A at 4 MHz to be able to run CP/M and its software. The military version features integrated terminal design.
  • Pravetz 8E - Industrial model based on the original Pravetz 82 architecture plus some memory extensions
  • Pravetz 8А - Uses Bulgarian-made chipset СМ 630, memory could be expanded up to 1 Mb, accessible in 64Kb windows.
  • Pravetz 8D - 8 bit home computer, uses TV instead of computer monitor. Not compatible with Pravetz 82 but inherits its architecture from the Oric home computers and compatible with their software
  • Pravetz 8С - cut down 8А, 128 KB RAM integrated, but not expandable. Less number of slots, but integrated Centronics, FDD controllers, Joystick and sometimes with RS-232. A version of 8C is the Pravetz 8VC, which features terminal like design.
  • Pravetz 8S - The most advanced from the series, 128 KB RAM integrated, exapandable to 1080 KB. Fewer slots, but integrated Centronics, FDD controllers, Joystick and sometimes with RS-232. Could control 3.5" floppy disk drive and a 5 MB HDD. Improved motherboard design with higher integration and support for various character sets.

16-bit architecture[edit]

Display of Pravetz 16

Pravetz-16 were IBM PC compatible:

  • Pravetz-16 (IMKO-4) - Featured Intel 8086/8088 at 4 MHz. Simple motherboard design with Bulgarian chipset. Standard RAM 256KB or 512KB expandable to 640KB.
  • Pravetz-16E
  • Pravetz-16ES (variations as a desktop or tower box) - Featured the 80186 processor at 8Mhz.
  • Pravetz-16A
  • Pravetz-16T - Turbo version
  • Pravetz-286

32-bit architecture[edit]

  • Pravetz-386

Pravetz 64M[edit]

In October 2013 it was announced that Pravetz computers would come back with the first Pravetz laptop to be released in 2014.

See also[edit]

References[edit]

  1. ^ (Bulgarian) Иван Василев Марангозов, pomagaloto.com, Материал № 54889, добавен на 9 декември 2007
  2. ^ (Bulgarian) The history... Facts concerning Bulgarian microcomputers

External links[edit]