There is provided a computer system which enables a portable terminal to be made smaller, lighter and less expensive, in which the portable terminal can share data with a host computer such as a personal computer installed in an office or the like so that data management can be centralized, and as long...http://www.google.de/patents/US6081828?utm_source=gb-gplus-sharePatent US6081828 - Computer system, and host computer and portable terminal suitable for the system
