zapisivati

1. to write down; to note down
   Uvek zapisujem šta treba da kupim. — I always write down what I need to buy.
   Studenti su zapisivali sve što je profesor govorio. — The students were writing down everything the professor said.
2. (of a device) to record; to log
   Kamera zapisuje snimke na memorijsku karticu. — The camera records footage to a memory card.

The perfective is zapisati.