“We are trying to make that driving experience one that is very engaging,” said Jim Buczkowski, the director of global electrical and electronics systems engineering at Ford. “We also want to make sure it is safer and safer. It is part of what our DNA will be going forward.”

Ford’s new MyFord system lets the driver adjust temperature settings or call a friend while the car is in motion, while its built-in Web browser works only when the car is parked. Audi says it will similarly restrict access to complex and potentially distracting functions. But in general, drivers will bear much of the responsibility for limiting their use of these devices.

Computer chips and other components improve every year while dropping in cost, allowing carmakers to introduce more sophisticated devices. Harman, based in Stamford, Conn., and a maker of such systems for cars, has created a pair of high-end multimedia systems due out this year that use full-fledged PC chips from Intel and Nvidia. Such chips once consumed too much electricity to be used in cars.

“We have always looked at the PC market with envy,” said Sachin Lawande, the chief technology officer at Harman, which works with Audi, BMW, Mercedes, Toyota and others. “They’ve always had these great chips we could not use, but now that’s changing.”

A complex new dashboard console from Ford, which it plans to unveil Thursday, brings the car firmly into the land of electronic gadgets. The 4.2-inch color screen to the left of the speedometer displays information about the car, like the fuel level, while a companion screen on the right shows things like the name of a cellphone caller or the title of the digital song file being played. An eight-inch touch screen tops the central console, displaying things like control panels and, when the car is not moving, Web pages.

The system has Wi-Fi capability, two U.S.B. ports and a place to plug in a keyboard  in short, many of the features of a standard PC.

Image The MyFord system lets a driver make a call while the car is in motion, but its Web browser works only when the car is parked. Credit... Ford

The automakers’ efforts are backed by companies that make chips for PCs and that want to see their processors slotted into the 70 million cars sold worldwide each year.