What’s the difference between module and driver?

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Problem :

I’m a linux newbie.Today when I try to connect USB-convert-to-serial-port .I should install module or driver or both of them? Can any one explain what is module and what is driver in simple words and pictures are perfered

Solution :

In the easiest way I can think:

a module is a “piece of software”, of any kind. it is a part of the main kernel, not a “user program”.
a driver is a “piece of software” of one specific kind: it is needed to communicate with hardware components.

a “driver” IS a kind of module.

Drivers are the firmware required by the OS to actively use the hardware on your system. Modules are like add-ons in Firefox (or chrome) where they give you more/different software functionality.

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