A computer is not required to operate the timer, but the Farmtek software will work with any Windows based computer via USB. It is a very simple software that just enters the time in a spreadsheet cell and does nothing else. If you need more functions, you would want a 3rd party timing software, the timer will work with most of them (AXTI.me, AXware, Pronto, etc)
A cable to work with Chronomix displays is $45. Contact us for more details on this.