WHY a computer can't stock analogic datas ?

>>61697946
https://en.m.wikipedia.org/wiki/Analog_computer

>>61697946
computer does not know what analog is
computer only know what YES and NO are

>>61697946
s/stock/store/
s/analogic/analog/

there's no point in storing/retrieving analog information in an otherwise digital computer, except for as an initial or final product (say to create a music cassette, or scan in a movie film)
the reason is that such information needs to be sampled into digitial information to be processed anyway, and once it's samples, storing it back as analog information after that point introduces noise (inaccuracy), as any subsequent sampling may differ. you're better off storing it as the digital sample instead

>>61698398
-- oh, there are also some artistic reasons for 'filtering' through analog part-way through a digitial process as well
like that thread recently where someone output a digital music video onto a VHS cassette, then sampled it back into a digital video file, effectively giving the video a "old vhs" look, which would otherwise be difficult to do in digital alone

you need to keep in mind that "digital" is just logical concept, you don't really "store digital data" (as opposed to analog), but rather analog data that has certain restrictions placed on it such that it can be accurately read back (accurate as in, the data read back is always the same as what was stored originally)
while this does drop the density of information you can store, having accurate data opens up other means of increasing density, such as digital compression, which cannot be done without precise data

take S-VHS as an example, it has been used for both analog and digital storage
as an analog video format, as an analog format, it stored 3 hours of not-quite-dvd-quality video, while the digital format, D-VHS, which uses the same physical tapes, stores 25GB of digital data, which if you used modern digital video formats, could store much more video, in much higher quality

There is no analog. It's quants all the way down.