Cloth, 5'A X 9 in., viii and 308 pp. $15.
REVIEWED BY HEINZ WALDBURGER 1THIS book presents basic material on the design and the functioning of both analog and digital computers.The first chapter is devoted to the introduction of the two types of machines. Three chapters are used to describe analog machines by means of a presentation which leads from the general to the specific. They cover operation of complete computers, design of computing systems, and computing circuits.The presentation of digital machines (six chapters) begins with a chapter on number representation followed by one describing the operation of a computer system. Then circuitry, storage devices, and input-output equipment are each treated in a separate chapter.Finally, a few remarks about programming, though not mentioning the wide range of present-day applications, close this hardware-oriented book.
It is now some 50 to 70 years since the classical works of European and American investigators developed the present techniques of measuring the discharge of rivers. Since then, hydrometric instruments have been improved a great deal, although there have been no essential changes or advance in the basic methods of hydrometry. Modern needs require research in two new directions, as follows:
(1) Research into the hydrology of remote, inaccessible and uninhabited regions such as deserts, mountains, tropical forests, and glaciers which will require convenient and portable equipment, universal in application, resistant to cold, ice, heat, and debris. Automatic registration and transmission, simplified methods of measuring, and convenient ways of computing are especially to be desired.
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