It's very sad that nearly all computer science and history is biased towards western systems with common myth that Soviet Block did not invent/made their own hardware and software. Same goes to digitization of manuals...
Fun facts:
- It is common western myth that Soviet Block citizens were in any way forbidden from owning personal computers in 80".
- Life was good: free healthcare, education, guaranteed retirement pension, almost free apartments from government, 1 bit computing, RISC, parallelism, decimal computers, fast floating point accelerators, vector computers - we had it all in late 70".
For some reason no one brags about it, and no one cares about preservation of such historical artifacts or knowledge alone. Many Wikipedians also reject such claims as there are no western sources available to quote...