Megahertz is the speed at which informationtravels through a computer. Megahertz is millions
of cycles per second. Chips have become so tiny thatthey are smaller than your fingertip.  The physical path on a smallerchip allows data to travel faster.  Most modern computers have 100-200mhz meaning they can make 100,000,000 cycles-200,000,00 cycles per second.