Computer Concepts

There are quartet types of accomplishment which ready reckoners: 1) Input/output; 2) Calculation and text consumption; 3) logic/comparison; and 4) Storage and retrieval. Computers suffer perform these operations quickly and accurately. Here, as elsewhere in the book, the author dos the imitation Byter family as examples of disparate calculator users and electronic reckoner uses. He offers examples of the different types of operation as closely to show how the user can make the computer work for a purpose. Each of these types of operation can serve both the individual user and the unified user, and understanding these operations is a step toward computer literacy, specifically toward knowing what a computer can and cannot do and how well it can be made to do a job. In format to perform any of these operations, the computer needs software, too known as application software, or just computer applications. There are various packages that have been created and that are commercially available for specific tasks. The user merely buys the package and places it in the memory of the computer, drawing upon it for whatever application he or she needs at the time. Some of these pre-written packages are discussed, notably Windows (which is in truth an application surroundings that helps the user access and use applications more than easily). Other application programs have been written that take vantage of the Windows environment and that the user can

selective information communications networks are described. Communications is an important function of the computer and the computer system, allowing information to be retrieved at a distance, entered at a distance, moved from one place to an early(a), manipulated through live telephone and radio transmission means, and so on. This brings a transition of other organizations and technologies into the computer world, from the telephone company providing phone lines to other carrier systems using fiber optics, microwave, and radio transmission. The advent of the computer has created a vast communications network that has to be organize and that often needs to be conformed to computer requirements in order to serve the business community better.

A wide kind of communications systems and networks are discussed, including electronic mail systems, fax machines, articulatio mail, databases, banking services, telecommuting systems, and so on.

Another aspect of prewritten software is address in the integrated packages and operating systems that provide a heel of different functions in one package. The author discusses how the user should depict these packages and decide among them in selecting the one that works best for his or her needs. There are several operating systems in use today, notably MS-DOS, which is probably the most widely used, and the new OS from IBM, which is only beginning to make inroads. These systems order the work of the computer and provide the environment in which everything else is accomplished. They also create the environment of commands that allow the user to tell the computer what to do.

MODULE 2: COMPUTER CONCEPTS, COMPONENTS, AND SYSTEMS

Storing and receiving output is addressed next. Storage means retaining the data that has been input, and retrieval means we can access that data as needed. Access can be gained through the same physical body of interfaces that input data. Disks and magnetic tape are the common memory board devices, and there are different t
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