Let's see what gadgets were popular in the USSR and where the idea of their manufacturing came from.
In 1980 almost every Soviet family had an electronic device that had actually been a good copy of gadgets produced by Nintendo company.
Soviet specialists were very good at copying foreign gadgets and loved to do that without paying any attention to copyright compliance policy. The idea of the gadget construction was born in Japan. Once a game developer who worked for Nintendo company noticed how another employee was playing with the keys of a calculator and decided to create a small electronic gadget that could be used both as a watch and as a game.
The idea was appreciated by the management of Nintendo company. Game & Watch was manufactured in 1980. After coming across the novelty, the Soviet government commanded to respond with a similar game. They bought several Japanese gadgets and sent them to a factory for close examination. That is how the Soviet version of the game arose.
Apple II computer manufactured in 1977 turned its founders into millionaires. Around 6 million similar computers were produced in total. And again the Soviet government decided that a computer is a good invention. Soviet scientists developed Agate PC considering the architecture and software of Apple II.
It should be mentioned that a Soviet PC was not an exact copy of Apple II as domestic element base was used. It had a design of its own and another software. The PC was produced till 1993. Agate PC was used for studying and was supplied with two switchboards. By the way, one such model was presented at CeBIT exhibition in spite of the copyright abuse.
In 1980 family PCs were very popular throughout the world. ZX Spectrum manufactured by Sinclair company was the most popular model.