11.   But because the laser must be fired between heart beats, the timing is controlled by computer.

12.   Computers control front and side air bags and tighten the seat belts in the event of a collision.

13.   Controlled by computers, these minuscule flaps can monitor the air sweeping across a wing in flight and respond in concert to stabilize or even turn an aircraft.

14.   Computers control most of the electronics in our homes and cars.

15.   For instance, the New York artist John F. Simon Jr. makes wall displays for which the images are controlled by computer.

16.   Goodman said that in many buildings, security, fire-alarm and power systems, and even backup electrical generators, are controlled by computers.

17.   In fact, some countries do not have air traffic control radar, which is what the computers mostly control.

18.   In modern subway systems, computers can control trains or override human errors.

19.   Instead, a light battery pack powers the AbioCor heart through radio waves and an on-board computer controls it.

20.   Only a computer can control the system since magnets must be powered in sequence and in microsecond bursts.