It’s crazy that you had access to these technologies during communist period.

Growing up in USSR I didn’t know anyone who would own a PC up until early 90s.

PC-s were only described in hobby magazines, like Bajtek or Młody Technik. Nobody had them, though, except maybe some institutions. The hobbyists used to own ZX Spectrum or Commondore 64, but even that was rare.

I know one programmer in his 50s. He had an access to the ZX Spectrum in his primary school, but that was by effort of his local physics teacher.

Yeh, that’s pretty much aligns with what I remember.

But I don’t get it then - why would they broadcast software for devices no one had?

Could it be that the handful of people with computer access were well connected & well regarded, & the people running the radio broadcasts wanted to cater to them especially? I'd imagine there could be some sense of personal & national pride & prestige around supporting these emerging technologies & promoting them to the public. (I'm just guessing though - I wasn't there & haven't studied the topic in depth.)

My guess would be that the broadcaster had one geek who pushed for that. Fellow geeks had software over the radio, the broadcaster had an opinion of a modern one, keeping up with the newest tech. Win-win.

I'm not (yet) in my 50s (though close). I used to have a C64 back in the day. I wrote write a few things in its horrible BASIC dialect. Probably the most advanced was a database (not relational, just one table, but kept separately from the source, of course on an audio cassette).

That device had ridiculous capabilities. The sound chip was good enough people wrote a speech synthesis software. Later, people wrote a graphical OS, with e.g. a text editor being an equivalent of Windows Write from the 90s.