Evolucion De Las TI
Enviado por lll3 • 10 de Octubre de 2013 • 258 Palabras (2 Páginas) • 163 Visitas
ELECTRONIC ACCOUNTING MACHINE ERA: 1930–1950
The first era of business computing used specialized machines that could sort computer
cards into bins, accumulate totals, and print reports (DaCruz, 2004). Although the electronic
accounting machine was an efficient processor of accounting tasks, the machines
were large and cumbersome. Software programs were hardwired into circuit boards, and
they could be changed by altering the wired connections on a patch board. There were
no programmers, and a human machine operator was the operating system, controlling
all system resources.
GENERAL-PURPOSE MAINFRAME AND MINICOMPUTER
ERA: 1959 TO PRESENT
The first commercial all-electronic vacuum tube computers appeared in the early 1950s
with the introduction of the UNIVAC computers and the IBM 700 Series. Not until 1959
with the introduction of the IBM 1401 and 7090 transistorized machines did widespread
commercial use of mainframe computers begin in earnest. In 1965, the general-purpose
commercial mainframe computer truly came into its own with the introduction of the
IBM 360 series. The 360 was the first commercial computer with a powerful operating
system that could provide time sharing, multitasking, and virtual memory in more
advanced models.
Mainframe computers eventually became powerful enough to support thousands of
online remote terminals connected to a centralized mainframe using proprietary communication
protocols and proprietary data lines. The first airline reservation systems
appeared in 1959 and became the prototypical online, real-time interactive computing
system that could scale to the size of an entire nation.
IBM dominated mainframe computing from 1965 onward and still dominates this $27
billion global market in 2004. Today IBM mainframe systems can work with a wide variety
of different manufacturers’ computers and multiple operating systems on client/ server
networks and networks based on Internet technology standards.
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