hones and+Smart+Card+Readers


 * __MICROPHONES__**

__Definition:__ - An instrument which converts sounds waves into an electric current usually fed into an amplifier, or in our case, a computer.

__Other Information:__ - Microphones are input devices as they allow computer users to input audio onto their computer. - There are many different types of microphones however they all serve a similar purpose using the same technology behind it.



__**SMART CARD READERS**__

__Definition:__ - Smart card readers are devices which can read external data from mediums such as SD card's and USB's.

__Other Information:__ - In order to use a smart card reader you need a smart card which can include credit cards, sim cards and even hotel room cards. - The smart card contains an RFID chip which the smart card reader then picks up on to appropriately recognize the data. - Smart card readers are an output device. - Smart cards may have up to 8 kilobytes of RAM. - Smart cards contain microprocessors which are used as a means of security as it enforces access to the data on the card.