The prototype of the Pravetz computers that were developed by engineer Ivan Vassilev Marangozov,[5] who was rightfully accused of cloning the Apple II.
In fact, IMKO-1 was a nearly identical clone of the original Apple II with a few minor exceptions - case, keyboard, character table (the lowercase Latin alphabet was replaced with Cyrillic uppercase) and power supply (early models used bulky and heavy linear power supplies).
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.
Much before Pravetz entered serial manufacturing, the IMKO-1 prototype development within the Institute of Technical Cybernetics and Robotics (ITKR) (ИТКР), a section of the Bulgarian Academy of Sciences 1979.
In 1982 experimental small series assembly of IMKO-2 units was organised by the ITKR in their production base in Iskar, Sofia.