Determine the source of the data The origin of where the data is obtained o

Determine the source of the data the origin of where

This preview shows page 14 - 17 out of 97 pages.

What data is needed to achieve its purpose? Determine the source of the data The origin of where the data is obtained o Availability (lunch time) o Data Quality ( Making sure no donkey answers) o Cost (cost incurred in project) (above example of conducting a lunch time survey) Decide how the data will be encoded Encode data for use by the system (putting it in the right format so that the system can make use of it) Hardware used for collection Scanners and/or digital cameras to collect images Digital camera - detects light and transforms it into analog electrical currents using charged coupled devices. Microphones and/or recording from peripheral devices to collect audio Microphone - sound waves converted into analog electrical currents. Video cameras and/or peripheral devices with appropriate interfaces to capture video Video camera - combines image collection with audio collection Keyboards and/or optical character readers to collect numbers and text QWERTY, QVORKN Digitising of text Data capture devices such as counters for counting cars on a road Software used for collection Device drivers that allow hardware to interface with the operating system Software allowing participants to enter asking to import data Data validation/verification Non-computer procedures in collecting Literature searches Surveys and interviews Positive: Polite, unbiased, listening, focuses on topic, well prepared
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P a g e 15 | 97 Jordan Koorey | Saint Marouns College
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P a g e 16 | 97 Jordan Koorey | Saint Marouns College Organising Organising the process by which data is structured into a form appropriate for use by other information processes Organisation on software applications Bitmap - pixels - blurry when resized | .jpg Vector : uses lines and shapes to mathematically represent an image (easy tor resize) .eps How different methods of organising affect processing, for example: Letters of the alphabet represented as images rather than text Numbers represented as text rather than numeric The way in which the hardware used for collection organises data by digitising images, audio, video, numeric and text Software for Organising Paint and draw software that allows image manipulation photoshop or paint Mixing software for audio manipulation Audacity Video processing software that allows arrangement of video and audio clips on a timeline
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