U61000 was the first 1-mbit DRAM microchip produced by the German Democratic Republic in September 1988 based on CMOS technology.
The first step in the project was to develop the chip, this was called U61000-1. After the design and technology were optimized, the U61000-2.1 was created. The final version for production was called U61000-2.2.
U61000C chip
U61000D
Presentation of the first U61000 chip to Chairman Honecker (1988)