How to make automatic insertion of the current time in Google spreadsheets when entering data in an adjacent cell?

Question

Google Sheets

Greetings!
I tried to write a formula like:
=ЕСЛИ(A8<>0;"=ТДАТА()";"")
But I got:
=TDATA()

If I write separately in the cell: =ТДАТА(), then the time is entered correctly, but in the formula there is some kind of ambush
Which way to dig - hz, thoughts are over :(
Thank you in advance for the answer!

Answer 1

If the condition is met, then the string -> "=TEDATE()" is displayed. To display the time, change the formula:
=IF(A8<>0;TODATE();"")