What Is Computer And Types Of Computer Pdf
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Hardware refers to the physical, tangible computer equipment and devices, which provide support for major functions such as input, processing internal storage, computation and control , output, secondary storage for data and programs , and communication.
Classes of computers
Computer , device for processing, storing, and displaying information. A computer is a machine that can store and process information. Most computers rely on a binary system that uses two variables, 0 and 1, to complete tasks such as storing data, calculating algorithms, and displaying information. Computers come in many different shapes and sizes, from handheld smartphones to supercomputers weighing more than tons. Many people throughout history are credited with developing early prototypes that led to the modern computer.
Supercomputers are the fastest and the most expensive computers. These huge computers are used to solve very complex science and engineering problems. Supercomputers get their processing power by taking advantage of parallel processing ; they use lots of CPUs at the same time on one problem. A typical supercomputer can do up to ten trillion individual calculations every second. Example Supercomputers:. Mainframe colloquially, "big iron" computers are similar to supercomputers in many aspects, the main difference between them is the fact that a supercomputer uses all its raw power to focus on very few tasks, while a mainframe perform thousands or millions of operations concurrently. Due to its nature, mainframes are often employed by large organizations for bulk data processing, such as census , industry and consumer statistics, enterprise resource planning and transaction processing.
On the basis of data handling capabilities , the computer is of three types:. Analogue computers are designed to process analogue data. Analogue data is continuous data that changes continuously and cannot have discrete values. We can say that analogue computers are used where we don't need exact values always such as speed, temperature, pressure and current. Analogue computers directly accept the data from the measuring device without first converting it into numbers and codes. They measure the continuous changes in physical quantity and generally render output as a reading on a dial or scale. Speedometer and mercury thermometer are examples of analogue computers.
A mainframe computer , informally called a mainframe or big iron ,  is a computer used primarily by large organizations for critical applications, bulk data processing such as the census and industry and consumer statistics , enterprise resource planning , and large-scale transaction processing. A mainframe computer is larger and has more processing power than some other classes of computers, such as minicomputers , servers , workstations , and personal computers. Most large-scale computer-system architectures were established in the s, but they continue to evolve. Mainframe computers are often used as servers. The term mainframe derived from the large cabinet, called a main frame , [ citation needed ] that houses the central processing unit and main memory of early computers.
A computer is one type of machine manage different kinds of programs to perform useful tasks to the users. Computer gives proper response to the users through the set of instructions arranged in proper order. It has storage capacity along with execution benefits. Computers can perform both complex and simple operations. Based on types of actions, computers design in several formats with hardware and software specifications.
A microcomputer is a small, relatively inexpensive computer with a microprocessor as its central processing unit CPU. The predecessors to these computers, mainframes and minicomputers , were comparatively much larger and more expensive though indeed present-day mainframes such as the IBM System z machines use one or more custom microprocessors as their CPUs. Many microcomputers when equipped with a keyboard and screen for input and output are also personal computers in the generic sense. The abbreviation micro was common during the s and s,  but has now fallen out of common usage. The term microcomputer came into popular use after the introduction of the minicomputer , although Isaac Asimov used the term in his short story " The Dying Night " as early as published in The Magazine of Fantasy and Science Fiction in July that year.
Do you know the different types of computers? PC. Apple iPad Air. A single person defines the personal computer, or PC, as.
types of computers pdf
A minicomputer , or colloquially mini , is a class of smaller computers that was developed in the mids   and sold for much less than mainframe  and mid-size computers from IBM and its direct competitors. The class formed a distinct group with its own software architectures and operating systems. Minis were designed for control, instrumentation, human interaction, and communication switching as distinct from calculation and record keeping.
Patrick, a computer technician, is a dedicated writer who wishes to make the world better by informing individuals who seek more knowledge. Wikimedia Commons. We have four different computer types classified according to their performance, power, and size. A computer is an electronic device that accepts data, processes it, stores data, and then produces an output. In this article, we are going to have a look at the differences between super, mainframe, mini, and microcomputers.
Types of Computer
Computers can be classified, or typed, in many ways. Some common classifications of computers are given below. Microcomputers became the most common type of computer in the late 20th century. The best-known early system was the Altair , introduced in The term "microcomputer" has practically become an anachronism. Minicomputers colloquially, minis are a class of multi-user computers that lie in the middle range of the computing spectrum, in between the smallest mainframe computers and the largest single-user systems microcomputers or personal computers.
Examples are speakers and headphones. Mainframes can add or hot swap system capacity non disruptively and granularly. Examine the characteristics or attributes of information quality. By airlines for making flight arrangements. C, Cobol, Fortran and Pascal as some of the major computer languages. An external speaker should be. They have superior editing tools such as spelling checker, the Thesaurus etc.
Source: ieee-citisia.org There are a lot of terms used to describe computers. Most of these words imply the size.
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