Essay on Computer and Its Uses in Insurance Industries

5002 Words Apr 2nd, 2015 21 Pages
Computer:

A computer is a general purpose device that can be programmed to carry out a finite set of arithmetic or logical operations. Since a sequence of operations can be readily changed, the computer can solve more than one kind of problem.
Conventionally, a computer consists of at least one processing element, typically a central processing unit (CPU) and some form of memory. The processing element carries out arithmetic and logic operations, and a sequencing and control unit that can change the order of operations based on stored information. Peripheral devices allow information to be retrieved from an external source, and the result of operations saved and retrieved.

A TYPICAL COMPUTER SYSTEM:

A typical digital computer
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The physical components of a computer are called hardware. The set of instructions given to the computer to accomplish a task is referred to as software. The hardware components of a computer system consist of the input device through which data or instructions are entered, the output devices on which the processed results are presented, and between them a central processing unit (CPU), which receives data or instructions from input devices, processes them and returns the results to the output devices.
Software can be classified into systems or applications software. Broadly speaking, software that offers facilities for better utilization of systems resources is called systems software, while software developed for specific application needs is called applications software. Software such as operating systems, computer language processors, general purpose packages and special purpose packages are systems types. Financial accounting, payroll, personnel and inventory control packages are examples of applications software.
Commonly encountered PC software includes programs for electronic spreadsheets, data management systems, word processing, operations research in statistics, project management, computer aided design, presentation systems, desk-top publishing and packages integrating two or more of these programs into software suites.

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