I got excited that we were the first ones to have 3.5" in the HP 150 but Wikipedia says the first one to use them is the Sony MSC-70 and even some kind of word

I got excited that we were the first ones to have 3.5" in the HP 150 but Wikipedia says the first one to use them is the Sony MSC-70 and even some kind of word processor before that. I remember how happy we all were when we transitioned from 5.25" to 3.5", such an improvement!