The equalization and regulation problems of the £3 system are described and a theori] of equalization of complex systems is outlined. The location and function of the various equalizers are explained including the roles and design of the various fixed, dynamic and manual equalizer networks. The analog computer used in the regulation system is described together with the cosine-equalizer adjusting technique used with manual equalizers. Finally the circuits and operation of the regulation system and its components are presented.
The flying spot store is a semipermanent information storage system developed for use in an electronic switching system which utilizes cathode ray tube access to information stored on photographic emulsion. Parallel optical channels are used to provide high capacity and parallel readout. A feedback system provides rapid and precise beam positioning for writing and readout. This paper describes the fundamental design considerations for memory systems of this type, stressing physical realizability, speed, capacity and other system features. The characteristics of a laboratory model are presented.
This paper is an introduction to the No. 1 electronic switching system, a new general‐purpose switching system developed for use in the Bell System. Organization and objectives of the system are outlined to provide a background for the detailed technical papers which follow.
Methods are described for performing comparisons of fast binary numbers. These techniques have proved useful in the positioning of cathode ray tube beams in a photographic memory. A binary address is compared with a digital indication of the present position in circuitry called digital servo logic. The output of the servo logic is an analog indication of the positional error. Logics are described for obtaining sign only, sign plus magnitude and sign plus approximate magnitude.
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