BPK Delta‑S ( Дельта‑С )
Computers have been produced in both the United States and Europe since the late 1970s. However, the Soviet Union was behind the "Iron Curtain" and computers were few and affordable to almost no one.
The small computers that were imported into the Soviet Union cost so much that it was not possible for the average person to buy one. At that time, many (illegal) enterprises sprang up all over the country that copied European computers (especially the easy-to-copy Sinclair ZX Spectrum) and assembled them from the Soviet components.
In most cases, the computers looked very cheap, but they worked. A real industry only started in the early 90s, although these were often (old) clones from the west. Delta-S is one of them. It was made in 1990 in the USSR, in the city of Kursk. This computer enjoyed great popularity.
Delta-S is a full clone of the ZX Spectrum. It is based on the Z80A CPU (unlike many Russian clones, this one used a real Z80A CPU produced in the West or South Korea). The memory is based on the Russian K573RF6A (Intel 2764 clone). The computer has a connection for the TV, a tape recorder, joysticks and used an external power supply.