There is also informática/computación; both Spanish words to refer to the same thing but used in Spain/America.
I guess that literally they'd be something like IT and CS.
https://en.wikipedia.org/wiki/Ordonnateur
https://www.dictionnaire-academie.fr/article/A9O0665
A search for "computer" does not find anything; though I suspect many French actually use computer not ordinateur.
To use one is colloquially 'to data'; as in, a verb form of data :)