Very often, you must have seen people inserting a small flat rectangular object into a computer. This small thing, known as a pen drive can hold a great amount of information in all forms.
What is a Pen drive?
It is a type of Universal Serial Cable (USB) flash drive. It is a
kind of memory card that can be plugged into a computer’s USB
port. It is termed “Pen drive” with reference to its size. It is small
and compact thus making it fit into the palm of our hand. It is often
flat and rectangular like a highlighter pen. A pen drive is used to
store data and has a storage capacity of 64 MB to 32 GB. It is removable
and rewrittable. It is mostly used as a backup for CDROMs
or floppy disks.
Mechanism
Pen drive consists of a small printed circuit board. This circuit
board provides a strong base for the pen drive’s form and also
serves as a means to collect information. The circuit board consists
of a small microchip within it. This microchip enables the pen
drive to extract or feed in data. This process requires relatively low
electrical power compared to CD-R’s or Floppy. It is based on EEPROMS
technology that allows writing and erasure process in a
computer system.
Transferring the data
The data that is to be transferred is connected through a computer
programme. It is then read, transmitted or rewritten from a
pen drive to a computer or vice versa. Thus the required data gets
copied to any selected drive on the computer for further use.
The working
When a pen drive is connected to a USB port, it is activated. The
USB port gives the pen drive access to the information on a specific
computer drive. Most of the pen drives are designed in such
a way that they are compatible with any USB port on a computer.
Transferring the data
The data that is to be transferred is connected through a computer
programme. It is then read, transmitted or rewritten from a
pen drive to a computer or vice versa. Thus the required data gets
copied to any selected drive on the computer for further use.
Internals of a typical
USB flash drive
1 USB connector
2 USB mass storage controller
device
3 Test points
4 Flash memory chip
5 Crystal oscillator
6 LED
7 Write-protect switch (Optional)
8 Space for second flash
memory chip
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