Submitted by: Submitted by enzho10
Views: 601
Words: 1218
Pages: 5
Category: Other Topics
Date Submitted: 12/12/2011 03:11 AM
DATA PROCESSING CYCLE
Regardless of the kind of data processed or the kind of device or equipment used, all data processing systems involve at least three basic steps : Input, Processing, and Output. These three steps constitute the data processing cycle.
1. INPUT=In this steps the initial data, or input data, are prepared in some convenient form of processing. The form will defend on the processing machine.
For example, when electromechanical devises are used.
2. PROCESSING= In this step the input data are changed, and usually combined with other information, to produce data is more useful form. Thus, paychecks may be calculated from the time cards, or a summary of sales for the month maybe calculated from the sales orders. The processing step usually involves a sequence of certain basic processing operations.
3. OUTPUT= Here the results of the preceding processing steps are collected. The particular form of the output data depends on the use of data.
Data processing. Refers to a class of programs that organize and manipulate data, usually large amounts of numeric data. Accounting programs are the prototypical examples of data processing applications. In contrast, word processors, which manipulate text rather than numbers, are not usually referred to as data processing applications.
Categories of data processing. There are three different categories of data processing. Manual process means that no machines are used and everything is done by a person and has the most chance of error. This means all calculations, operations, and transferring of data is done by hand. Mechanical data processing is more accurate than manual. Calculators, computer programs and other devices are used on the data however someone still has to step in between operations. Electronic data processing is the most accurate. Once the data is input, the computer runs all of the calculations and operations.
Data processing operations. 1. Recording. Recording refers to the transfer...