Windows bootable USB drive, mainly contains Windows official ISO files, is mainly used as an OS installation media. With it, you can boot PC from the bootable USB and install Windows OS successfully regardless the computer is running or dead. You can also use the bootable USB to repair some PC errors by setting PC to boot from the USB.
The basic idea behind this Clicker counter is to measure the clicks in a particular time interval. That means if you select the time for 30 sec, it will set the timer for 30 sec. As the timer starts, you also have to start clicking on the mouse pad.