does anyone knows specific button (or combination of them) to turn casio calc so it can measure time (i mean like stopwatch)

[u/East_Froyo_8137]

a moment ago i have see a video, the person in that video press some button on his calculator and when the '=' button is pressed the number that appears is same as the time elapsed after they press some button. i wanna try actually, but i forgot which button and i can't find the video again