Hi-tech digital device beeping.

There are two types of sounds – beeps are for “processing data”, buttons are for “processing complete”. Files:

beep1: 0:01.098
beep2: 0:01.242
beep3: 0:01.359
beep4: 0:01.365
button1: 0:00.301
button2: 0:00.303
button3: 0:00.294
button4: 0:00.234

Some of my other sounds: