Range, azimuth, and elevation were shown on a cathode-ray tube display.

Verifi works only with conventional cathode-ray tube displays.

Mr. Wozniak applied techniques that are similar to those used in Cleartype to color cathode-ray tube displays, he said, adding that the patent had expired.

A thermos, which lay underneath several books and papers atop his attack radar set, was leaking coffee over the cathode-ray tube display and the radar controls.

Several manufacturers are offering flat-panel displays intended for household users at roughly $400, the same price that a conventional cathode-ray tube display fetched just a couple of years ago.

But the company's main focus on manufacturing cathode-ray tube displays - the boxy monitors that have since been replaced by LCD screens - appears to have hurt its performance.

Older cathode-ray tube display equipment (television and computer displays) had high voltages and currents, and were far more of a fire risk than thin panel LCD and other displays.

It is a cathode-ray tube display, so it's a lot bigger than a flat-panel L.C.D screen, but it offers excellent color, compatibility with PC's and Macs and costs less than $300.

These slender new displays, which are essentially desktop versions of the liquid crystal displays attached to high-end portable computers, take up only a fraction of the desktop space hoarded by conventional computer monitors, which are known as cathode-ray tube displays.