Hola,
la verdad es que esta noticia llega con casi 60 años de retraso, pero buscando información sobre unos circuitos electrónicos me tropecé con esta joya:
A REPORT ON THE ENIAC (Electronic Numerical Integrator and Computer). Es un informe técnico sobre el ENIAC (fechado en 1946), uno de los primeros ordenadores electrónicos construidos y que, en gran medida, marcó el inicio de una nueva era.
Absolutamente recomendable su visita, a pesar de no estar completamente transcrito, contiene mucha información, además de figuras y gráficos aparentemente originales.
Una de las perlas del informe (en realidad, son los dos primeros párrafos):
Cita:
|
Empezado por A REPORT ON THE ENIAC
The Electronic Numerical Integrator and Computer (ENIAC) is a high-speed electronic computing machine which operates on discrete variables. It is capable of performing the arithmetic operations of addition, subtraction, multiplication, division, and square rooting on numbers (with sign indication) expressed in decimal form. The ENIAC, furthermore, remembers numbers which it reads from punched cards, or which are stored on the switches of its so called function tables, or which are formed in the process of computation, and makes them available as needed. The ENIAC records its results on punched cards from which tables can be automatically printed. Finally, the ENIAC is automatically sequenced, i.e., once set-up (see Sections 1.1.4 and 1.4. and subsequent chapters) to follow a routine consisting of operations in its repertoire, it carries out the routine without further human intervention. When instructed in an appropriate routine consisting of arithmetic operations, looking up numbers stored in function tables, etc., the ENIAC can carry out complex mathematical operations such as interpolation and numerical integration and differentiation.
The speed of the ENIAC is at least 500 times as great as that of any other existing computing machine. The fundamental signals used in the ENIAC are emitted by its oscillator at the rate of 100,000 per second. The interval between successive signals, 10 micro-seconds, is designated by the term pulse time. The time unit in which the operation time for various parts of the ENIAC is reckoned is the addition time. An addition time is 20 pulse times or 200 micro-seconds (1/5000 th of a second).
|
Definitivamente vivimos
Tiempos modernos
Saludos
21-03-2005
Mode Lineal
