Why would AI say that, when nearly every piece of training data is ever been fed would use milliseconds? I think much more likely that this is how the author thinks of it.
3 hundreds of a second == 33 Hz is very clean in my human brain.
Centiseconds was one of the ways time was measured on the BBC Micro. Your convenient options for accurately measuring the passage of time were vsyncs (50/sec), centiseconds (100/sec), microseconds (1,000,000/sec), or cycles (2,000,000/sec).
It's actually in the commented original disassembly and used in some of the original BBC documentation / writing. Which is how it ended up here - the article is a mix of things I wrote and things I asked an AI to write for me from the notes / findings from the archaeolgy.
3 hundreds of a second == 33 Hz is very clean in my human brain.