Bluetooth is a high-speed, low-power microwave wireless link technology, designed to connect phones, laptops, PDAs and other portable equipment together with little or no work by the user.
In computing, an expansion card is a printed circuit board that can be inserted into an electrical connector, or expansion slot on a computer's motherboard.
Sound card also known as an Audio Card is an internal expansion card facilitates the input and output of audio signals to and from computer.
A sound card is an internal expansion card that provides input and output of audio signals to and from a computer under the control of computer programs.
