The benefits of computer technology are enormous, but high technology has made modern equipment more fragile and much more expensive. Microprocessor technology is on your desktop. But it is also the brains that regulate a building's heating and air conditioning system. It runs voice mail and operates phone switching systems. It turns gas pumps into high tech cash registers that offer pay-at-the-pump convenience. Equipment exposures have changed considerably in recent years because the equipment itself has changed. The microprocessors and circuitry that control these modern devices are fragile and more susceptible to electrical injury, shock, vibration, and heat. Another factor that contributes to higher risk is the extent to which microprocessors are embedded in machinery and equipment.