Manipulations - PowerPoint PPT Presentation

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Manipulations

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computer output device – PowerPoint PPT presentation

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Updated: 13 March 2018
Slides: 7
Provided by: dheerajdhiman
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Title: Manipulations


1
Manipulation
  • Mouse
  • The mouse is an input device that is used in
    addition to the keyboard. It is a hand-held
    device that controls a pointer on the screen.
    When we move the mouse around the desktop , the
    rubber-coated ball on the bottom of the mouse
    moves. The balls movement is translated into
    signals that tell the computer how to move the
    screen pointer. On the top of the mouse, are two
    buttons that are used to make selections from the
    menus on the screen.
  • The functioning of the mouse is always held with
    the pointer selection when the cursor reaches
    the desired location, the user usually pushes a
    button on the mouse once or twice to signal a
    menu selection or a command to the computer.
    Mouse technology is often user with
    graphics-oriented microcomputers like Macintosh .
    With special software for graphics, the mouse can
    be used like a pen or a paintbrush to create
    figures and patterns directly on the video
    display screen. The keyboard, however, still be
    used to type in characters and issue-some
    commands, depending upon the software.

2
Output Devices
  • Like input units, output devices are instruments
    of interpretation and communication between the
    humans and the computer. These devices take
    machine-coded output results from the processor
    and convert them into a from that can be used by
    people or a machine input in another processing
    cycle. In personal computer systems, display
    screens and desktop printers are popular output
    devices.

3
Monitor
  • The computer screen-or monitor- is like a TV
    screen which could be viewed. The computer
    displays instructions sent to the computer and
    the information and results from the computer
    back to the user. It relays programs message or
    instructions-called prompts-and displays results
    computer screen can either be a monochrome screen
    display or a color screen display. A monochrome
    screen uses only one color-usually white, green,
    amber or black to display text on contrasting
    background. Colour screens commonly display 256
    colours at once from a selection of over 2,56,000
    choices.

4
Speaker
  • Speaker also an output device which is used
    to bring any kind of voice from computer. There
    are a variety of Speakers are available in the
    market today depending on their cost and
    performance.

5
Printer
  • Printer are the primary output device used to
    prepare permanent documents. Along with the
    computer screen, a printer serves as a medium for
    the computer to tell us what we have sent in as
    an input and what it has done in response to the
    same. The only difference is that the printer
    generates a permanent hard copy of our work on
    paper. A basic classification of printer.

6
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