How Do Pen Drives Work?

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The pen drive is named as such due to its compact and portable size. Pen drives are used to write and read data. They work just like a CD or DVD but due to their small size and huge data storage capacity, they are more popular than CDs and DVDs. Pen drives are available in the capacity range of 32MB to 128GB. They can be attached to version 2.0 USB ports, which are commonly available these days in all types of computers. They are also referred to as USB flash drives.


The Pen Drive consists of the following parts:

- Male type A USB connector

- USB mass storage controller

- NAND flash memory chip

- Crystal oscillator

- Jumpers and test pins

- LEDs

- Write-protect switches

- Unpopulated space

- Connector cap or cover

- Transport aid

Pen drives have flash memory and the memory is EEPROM (electrically erasable programmable read only memory). Some open drives contain space for memory cards to increase internal memory. Pen drives are plug-and-play devices, hence no software is required to make them work. Also, they don't require any battery or power. Simply insert your pen drive into your computer and start storing or reading data.

The first commercial pen drive was launched in the year 2000 by the firms Trek Technology and IBM.