I'm talking about computerization of the planning process. I don't think PESEL counts. As far as I remember Poland didn't computerize any input/output economic tables or forecast consumption from purchase data or anything of the sort that was proposed in the 50s.
There was a little of that too, for example SIZ, SPIS and CENPLAN. They were introduced partially and never functioned as designed of course, after all it was a communist country :)
Yes, they were introduced partially as experiments. As far as I'm aware though there was never an automated input/output calculation which is the real step #1 of cybernetic planning.
