Abstract: A system is disclosed for supplying information in electronic form from a database to subscribers at a plurality of remote locations. Subject matter descriptors are applied to newly acquired information, and these descriptors are compared with information interest profiles maintained for all of the subscribers. Each subscriber also has an assigned identification number. A list of identification numbers is prepared as a result of the interest check, and this list of numbers is broadcast by radio transmission. The subscribers are equipped with radio receivers able to recognize their assigned numbers. When a radio receiver recognizes its identification number, it causes an associated remote computer to call the database and request transmission of the document by telephone link.

Abstract: An auxiliary keyboard of generally U-shaped configuration for clamping onto a stand-alone computer keyboard. The auxiliary keyboard has a membrane provided with a series of touch-sensitive areas for enabling operator input of special functions into an associated computer. The auxiliary keyboard is provided with a removable designation strip having specially imprinted function designating areas.