External hardware
External hardware which used for computer operation from other devices exam EHD(External hard disk), pen drive and etc.
Some external devices given below with images . And his summary!
Some examples
Hard Disk
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| fig - Hdd |
written with the help of a magnetic head . hard disk are connected to the motherboard using special cables such as PATA (Parallel ATA), SATA (Serial ATA), USB or SAS (Serial attached SCSI) cables and they are powered by a power supply unit.
External hard disk
Pen Drive
pen drive is a external device.this size is small but he have many extra and more memory in his card. pen drive has a USB type to connect the CPU computer in front and back frame.
This devices is used mostly to computer system. For receive or send a file in this devices.



