ICT INPUT OUTPUT +STORAGE

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  • ICT REVISION
    • Inputs
      • touch screen
      • Microphone
      • Keyboard
    • Outputs
      • Printer
      • speaker
      • Projector
    • Storage Devices
      • DVD/CDS
      • Flash
      • Floppy Disk
      • Ram
      • ROM
      • Hard disk
    • Files
      • JPG- lossy compressed for storing images smaller than a BMP
      • PNG- Lossless format, common choice forstoring line drawings text and iconic graphics at a small file size.
      • Use MP3 files for web pages, web videos, in fact for anything on the Internet. AnMP3 file is a compressed music file. It loads rapidly and still plays with a very good sound quality..
      • PDF allows you to import text from a Word document, images of various formats, Excel® spreadsheets, vector graphics, and more into a single PDFdocument.
    • MPEG generally produces better-quality video than competing formats, such as Video for Windows, Indeo and QuickTime
    • Why can videos be lossy but not text files?
      • ? When the file is compressed some detail/data/quality/resolution is lost... ? ... which is not noticeable in the video file/video still viewable with lower quality ? … but would make the text file unreadable/lose meaning or comprehension
  • Revise Man!!!!

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