IBM research division says it has developed a prototype of a portable computer module that is the size of a small pad of paper and has the computing power of a typical notebook or desktop computer.

The portable computing device includes 128 megabytes of dynamic random access memory, a 10-gigabit hard drive and a microprocessor — which is the brain of the computer — that runs at 800 megahertz, or 800 million cycles per second.
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