I. Introduction
Computing machines have been around for a long time, hundreds of years. The Chinese abacus, the calculators with gears and wheels and the first analog computers are all examples of computing machinery; in some cases quite complex, that predates the introduction of digital computing systems. The computing machines that we’re interested in came about in the 1940s because World War II artillery needed a more accurate way to calculate the trajectories of the shells fired from battleships. Today, the primary reason that computers have become so pervasive is the advances made in integrated circuit manufacturing technology. The modern computer has become faster and more powerful but the basic architecture of a computing machine has essentially stayed the same for many years.
Most of us use computers for a variety of tasks, from serious scientific computations to entertainment.
The computer system can be divided into:
• Computer hardware.
• Computer software.
Computer hardware represents the physical and tangible components of a computer, i.e. the components that can be seen and touched.
Examples of Hardware are the following ?
• Input devices ? keyboard, mouse, etc.
• Output devices ? printer, monitor, etc.
• Secondary storage devices ? Hard disk, CD, DVD, etc.
• Internal components ? CPU, motherboard, RAM, etc.
المادة المعروضة اعلاه هي مدخل الى المحاضرة المرفوعة بواسطة استاذ(ة) المادة . وقد تبدو لك غير متكاملة . حيث يضع استاذ المادة في بعض الاحيان فقط الجزء الاول من المحاضرة من اجل الاطلاع على ما ستقوم بتحميله لاحقا . في نظام التعليم الالكتروني نوفر هذه الخدمة لكي نبقيك على اطلاع حول محتوى الملف الذي ستقوم بتحميله .
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