1. Press the <ON> button to turn on your calculator (I told you this is easy to understand)
2. Type in the letters BEEP frequency;duration (in frequency type any number, the larger the number, the higher pitch the calculator will make) (in Duration type how many seconds you want the noise to play for).
EG: BEEP 2500;100
This will play for 100 seconds at a quite high, and lound frequency.
We had a music period where we had to do private study, and we had this BITCH of a teacher. We set off about six or seven of these going at once, you could tell she was getting pissed off.