Input-output-And Storage Devices Ppt
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Transcript of Input-output-And Storage Devices Ppt
Input, Output and Storage Devices
Ms. Hall
Input is any (unprocessed material)
data and instructions entered
into the memory of the computer.
An input device is any hardware component that allows users to enter data and instructions, programs, commands and user
response into a computer.
The mouse is an input device designed to manipulate objects on the computer screen.
It can also be described as (a hand-operated electronic device that controls the coordinates
of a cursor on your computer screen as you move it around on a mouse pad; on the
bottom of the device is a ball that rolls on the surface of the mouse pad).
The keyboard is an
input device
designed to enter
text, characters and
other commands
into the computer.
This is a pointing device shaped like a pen and is connected to a VDU (Visual Display Unit). The tip of the light pen contains a light-sensitive element which, when placed against the screen, detects the light from the screen enabling the computer to identify the location of the pen on the screen.
This is often used for playing games and for simulators. They can move in 8 directions and often have buttons attached for extra functionality.
WHAT IS A WHAT IS A JOYSTICK
??
A scanner takes a picture placed on
the scanner screen and digitizes the
information in order to present it on the computer
screen for viewing.
Output:
This is processed data called information
because it is now organized material for
users to view and manipulate.
Storage:
Storage is keeping information or data that
will not be needed for over a long period of
time using a storage media.
Backing storage devices are where you can store data permanently. This means that data is held when the computer is switched off and can be loaded onto a computer system when required.
The hardware that stores the data is called backing storage media. The media are put into backing storage devices.
Monitor: This is a plastic or metal case that houses a display device that conveys text or graphics as a separate peripheral.
Plotter: This is a special purpose output device that draws graphs, charts, and maps using ink pens.
Speaker: This is a component of a computer that produces music, speech, or other sounds, such as beeps.
Multimedia projectors: This is a device that takes the image from a computer screen and projects it onto a larger screen so an audience of people can see the image clearly.
Hard Disk Compact Disk(CD)
Digital Video Display (DVD)
Flash drive Zip Disk
Floppy Diskette
THE END