hello99- I think I saw in Ashrei ha’ish ????? ??”? ??? on shabbos nogea kosev, that rav Elyashiv said even though the ksav itself has no kiyum and is being refreshed etc. it is still kosev mdoiraysa since it is nechshav derech ksiva.
In Yabia Omer 8 OC 48 says
?????? ???? ????? ?????? ????? ????? ?? ????: ?????? ?????? ?? ????? ????? ???? ?? ??? ??? ?????, ???? ???? ??????? ??????? ?? ??? ???????, ??? ?????? ?? ??? ????? ????. ??? ?????? ???? ??? ???? ????? ???? ?????? ????? ?????? ????? ???? ??, ??? ????, ??”?.
IN Nishmas Avraham he brings down from Rav Shlomo Zalman ??? ?? ????”? ???????? ??”?: ??? ?? ????????? ??? ?? ???? ?? ????? ????, ?? ?????? ??????? ???? ?????? (??”? ????????? ???? ???) ???? ??? ????? ?????? ???????? ?? ???? ?? ??? ???? ??? ???.
Shmiras Shabbos Khilchosa brings down from rav shlomo zalman and rav moshe nogea a typewriter, that it is not a maaseh uman so it will be muttar only ltzoirach hamoed.
However, yesh lchalek by a computer Like the yabia omer