... phones, portable radio equipment, transmitters, transceivers.Computers:Memory backup for desktop-PCs notebooks, PDAs, real time clocks, ... bridgingAudio / Visual appliances:Memory backup for desktop-PCs TV sets, car stereo,, real time clocksPersonal ... Portable translators & calculators, solar watches, hearing aidsDevices for office peripheralsFax and telex machines, printers, copiers, ...