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Input devices:
QWERTY_keyboard_pic.jpg
QWERTY
input devices are devices that are used to enter data onto a computer e.g. a QWERTY keyboard (named QWERTY due to the first six letters on the keyboard).Output devices:Output devices are used to communicate results of processing data, here are examples; printers, speakers and screens.Storage devices:One example would be a CD-ROM, because it stores data, it also allows data to be put into it and taken out of it. There are two types of data storage:
  • Internal devices, built into the computer e.g. a hard drive.
  • External devices, can be removed from a computer e.g. a USB/memory stick.
Here is a computer system that you might be familiar with:

INPUT
STORAGE
OUTPUT
Keyboard
Hard drive
Monitor
Mouse
Floppy Disk (3 ½ Inch)
Printer/s
Speech Recognition
CD-R/RW
Projector
Electronic Pen
DVD-R/RW
Graph Plotter
EPOS System
Zip Disk
Audio Output
Interactive whiteboard
Solid state storage (MMC,
SD cards etc)

Scanner Tape


OCR/OMR


Track Ball


Barcode scanner


internal_components_of_a_computer.jpg

I will now tell you the