This is a Soviet-era computer-related technology based on the MSX computer standard. It was initially developed by Elektronika in the late 1980s and included a range of products, including CPUs, keyboards, controllers, peripherals, and accessories. The 2-0000021 was an industrial CPU based on the Z80-family of processors. It was typically used as a controller in various production systems, such as agriculture and aerospace. The 2-0000021 had a variety of interfaces, allowing it to be used with other components and peripherals from the MSX range of products. Additionally, it could be used with other computers and devices, such as microcontrollers, PLCs, and serial networks. This processor was built to be robust and long-lasting, making it ideal for industrial use cases.