Data processing cycle , stages of data processing cycle.

this topic cover all the stages of data processing cycle , different forms of processed data and the computer: a data processing cycle. it also explain the computerized system and its advantages over manual system

1. 4/2/2019 1 Samina khan FDC Risalpur

2. CONTENTS Chapter 1 Data –Processing Cycle Chapter 2 Binary Computing Chapter 3 System Software Chapter 4 Application Software Chapter 5 More on Word Chapter 6 More on Spreadsheets Chapter 7 Algorithms and Flow charts Chapter 8 Introduction to Programming Languages Chapter 9 Computer Networks Chapter 10 The Internet Chapter 11 Communicating through Email 4/2/2019 2

3. DATA PROCESSING CYCLE CHAPTER 1

4. Objectives To introduce data-processing cycle Explain the stages involved in the collection and processing of data Explain that data can be processed in various forms Discuss manual and computerized data-processing systems. 4/2/2019 4

5. Stages of data processing cycle

6. Stages of Data-processing Cycle Input, processing, output and storage are all connected functions. Data goes through these processes and convert into information. It begins with the input stage and ends at the output stage .

7. INPUT(Data) OUTPUT(Information) Processing The Linear data processing process

8. The Input stage Data does not contain any information. It is fed into the data-processing system to be converted into meaningful information. Input stage contains the following activities: Data collection Data capture Encoding Data transmission Data communications

9. Data collection Gathering data from the environment and preparing it for input. The document on which data is recorded when it is collected is called a source code.

10. Data capture Entering the collected data into a data processing system such as a computer system.

11. Encoding Converting data into a form that is easier to input into a data processing system. Example: Date as DD/MM/YYYY This saves a lot of time and reduces error.

12. Data transmission Sending input data to the processor and carrying it across its various components. Also involves carrying data from the processor to the output devices.

13. Data communication Set of activities that allow data to be sent from one data-processing system to another.

14. The Processing stage Raw data transform into meaningful information Computer follows instructions called programs to process data. These programs include operating systems, word processors, spreadsheets, web browsers etc

15. The output stage Processed data Presented through output devices After users viewed the output , they understand it & make decision on the basis of their understanding . This is called Decoding .

16. The storage stage Information is stored to be used later Hard drives and pen drives are used to store information.

17. The data processing cycle

18. Different forms of processed data

19. 1. Sorted Data Organizing the data according to some pre-defined criteria. It helps us to find the information easily. Spreadsheet program helps us to sort a large amount of data.

20. 2 . Grouped Data Placing data in groups where something is common It helps us to see how different items of data are related to each other.

21. 3 . Calculation Numeric data is used to perform calculation. Electronic spreadsheet and calculators are used to perform complex calculations using a computer. We can create graphs and charts to display data.

22. The computer: A data processing system

23. The computer: A data processing system Several machines are invented to process the data faster and accurately. Computers can be connected to these machines in order to make decisions. Example: Barcode reader in larger stores.

24. The advantages of computerized system Manual systems are replaced by computers because of their many advantages Some of the advantages are Speed Accuracy Efficiency Variety Ease of use capacity

25. Thanks