America's C4ISR network provides everything from target detection and identification to navigational information.

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To date, DNDO has, among other things, tested boat-mounted radiation detectors, detection equipment that can be carried in a backpack, and handheld radiological detection and identification devices that can withstand exposure to water.

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But among the tasks the machine can perform in a single step are edge detection, inversion, the identification of lines and shapes of different orientations, and the filling-in of concave shapes all things that are useful in image-processing, and not all of which can be managed by digital technology.

ECONOMIST: Analogue computing