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Commercial Data Processing

Commercial Data Processing. Lesson 2: The Data Processing Cycle. By the end of this lesson you will be aware of the terms:. The Data Processing Cycle Direct Input Devices Bar Codes Mark Sense Card MICR Magnetic Stripe Smart Card OCR. The Data Processing Cycle.

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Commercial Data Processing

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  1. Commercial Data Processing Lesson 2: The Data Processing Cycle

  2. By the end of this lesson you will be aware of the terms: • The Data Processing Cycle • Direct Input Devices • Bar Codes • Mark Sense Card • MICR • Magnetic Stripe • Smart Card • OCR

  3. The Data Processing Cycle Data is collected from a source document, eg an order forms, cheques, application forms, lottery cards. Source document are design carefully so people don’t make mistakes. Data Processing Cycle data collection & preparation Data is entered into the computer for processing. CDP systems try to remove humans as much as possible from this process, rather they use a variety of input devices to directly input data. data input Data is processed, ie fed into the program and manipulated. There are 2 types of processing: interactive and batch. Data is then stored on some form of backing store. data processing & storage Processed data is either displayed on a monitor or printed onto paper or output to a file. Turnaround documents are often printed as output. These documents are output from one process that will be used later as input by another process. output of data

  4. Direct Data Input  Direct data input is when data is input using hardware rather than people this: • reduce human errors • speeds up the inputting of data, and • increase productivity ie increase how much one person can input per hour.

  5. Direct Data Input 

  6. Direct Data Input (Credit)

  7. Answer the following questions in your jotter. • List, in the correct order, the 4 stages of the data processing cycle. • Give 2 reasons why direct input devices are used. • Explain how bar codes are used to get the price. • Give an example of a mark sense card and explain how the data is input. • Give an example of MICR and explain how the data is input. • Give an example of Magnetic Stripe and explain how the data is input. Credit • Why do smart card help fight fraud? • Explain how OCR can help people who cannot type fast.

  8. Extension Read through this webpage for further information on this topic. http://www.teach-ict.com/gcse/hardware/input/miniweb_automatic/index.htm Try some quizzes on this topic. http://www.teach-ict.com/gcse/hardware/input/students/s_input_quiz.htm

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