In only a shot time, the computer has changed
the way in which many kinds of jobs are done.
However, it is not able to think. It accepts data and
instructions as input, and after processing them, it
outputs the results.
A computer is not merely a machine but a
system. So in a Data Processing Center (D.P.C.) we
have to consider three parts: the hardware or central
processor and peripheral equipment, the software or
programs and the liveware or the technical people,
including the staff.
The hardware consists of several units: the central processor, the input/
output processors (I/O), data communication processors (DCOM), all of them with
one or several units and many combinations. Attached to the I/O processors is the
peripheral equipment; attached to the DCOM are the teleprocessing lines, adapters,
modems and terminals, or another computer alone or networking with another host
system.
The software is the collection of man-written solutions and specific
instructions needed to solve problems with a computer, as well as all documents
needed to guide the operation of a computer, that is, manuals, programs, flowcharts,
etc.
The liveware basically consists of systems analysts, the programmers,
operators and technical manages, including supervisors, networking and data base
administrators.
Data processing center
Hardware: Main processors Memories I/O processors DCOM processors Peripherals (disk, tape, printers, terminals)
Software: Basic software Application software
Liveware: Systems analysts Programmers, Operators Schedulers Data Base and DCOM Administrators Specialized Managers Technical support
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