Plexcom Inc of Simi Valley, California has added a further twist to the Network Computer scenario. The company said it had the idea several years ago and has been perfecting the system ever since. It has held a patent for its fundamental design for over a year. Similar to other Network Computer vendors, Plexcom claims its QuantumNet can reduce maintenance and administration costs by up to 50%. But where this system differs from others on offer is that all the computer’s iAPX-86 processors, hard disks and memory are pulled together on to boards that fit into a central chassis. Each user then only has a standard monitor and keyboard on their desk along with a QuantumNet Universal Extender – a special transceiver unit. This has all the sockets for the keyboard, monitor and printer and links back to the main chassis via a choice of 10Base-T, 100Base-T, Fiber or Token Ring and has a dedicated microprocessor and upgradable memory. Each processor has enough power to support about 10 users running low-level applications, such as World Wide Web access or a wordprocessing package. And if any user needs to switch to a power-hungry graphics application, the system automatically re-routes to a processor with more available power. Three optional floppy disks are available, but the choice ultimately rests with the employer as to whether it wants staff to take work out of the office with them each night. Sales director Mike D’Souza said the beauty of the system is its flexibility. The QuantumNet modules slot into a case to transform it into a stand-alone personal computer, small enough to fit into a brief-case. Alternatively, a portable personal computer can be plugged into the network. The entire network would probably cost abou t 10% less than a standard system, but because standard keyboards, mice and monitors can be used from existing office equipment, the company said that it’s difficult to gauge the cost of a typical system.
