A. P. Ershov Institute of Informatics Systems (IIS) was founded in April 1990. In September 1997 it became a part of the United Institute of Computer Science.

Now the work performed in the IIS covers each of the following research areas:

1. theoretical background of computer science;
2. methods and tools of constructing reliable and efficient programs;
3. artificial intelligence systems;
4. software and application packages for new computers, systems and networks;
5. The Institute consists of six laboratories and a number of supporting divisions, the information service with A. P. Ershov Memorial Library including.

1. Laboratory of Theoretical Programming VLSI CAD Laboratory;
2. Artificial Intelligence Laboratory;
3. Mixed Computation Laboratory;
4. Laboratory of Systems Programming;
5. Program Construction and Optimization Laboratory;
6. Group of Portable Software.

1. Technical support group;
2. Information Technologies dept.;
3. Research organisational dept.