What is a computer ?
A computer is an electronic device that executes operations and stores data in its own memory. Computers execute processes by instructions given.
This is a short and simple crash course about computers. It would not make you an instant genius but it will
let you understand the basics. The computers we have in front of us has four basic functions.
1) Input
2) Processing
3) Storage
4) Output.
Each computer from the most complex
systems to the very basic are connected to these four functions.
Now lets break these down for you.
1) Input.
Can be defined as a device that can
be used to insert data into a computer or other computational device.
The keyboard is a device
that gets information to a computer. ( You have to type the thing.)
Another input device is
the mouse.
Here are a list of some
input devices.
1)
Cameras
2) Video Capture Hardware
3)
Barcode reader
4) Digital camera
5)
Joystick
6)
Keyboard
7) Microphone
8) MIDI keyboard
9) Mouse (pointing device)
10) Scanner
11) Webcam
12) Microphone
2) Processing
We normally put information into the
computer and took it out it that is called processing. This takes part in the processor. The basic processor is the Central Processing Unit or (CPU) for short. This is the brain of your computer . The hardware that carries out the instructions of a certain program and executes it.
3) Storage
Computer storage devices are devices that holds data
. The hard drive is the main storage device. Other storage devices are like
flash dives and Cd's . In older years we had the floppy disk but the storage in this device was very limited.
4) Output
An out device is any piece of
computer hardware equipment used to communicate the results of data
processing carried out by a computer which converts the electronically
generated information into human-readable form.
- Monitor
- Printers (all types)
- Plotters
- Projector
- LCD Projection Panels
- Computer Output Microfilm (COM)
- Speaker(s)
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