Bandwidth explained?

Bandwidth, also called bandwidth, refers to the amount of data that can be transmitted in a fixed time, that is, the ability to transfer data in the transmission pipeline. In digital devices, bandwidth is usually expressed in bps, bit per second, which is the number of bits that can be transmitted per second. In analog devices, bandwidth is usually expressed in terms of transmission cycles per second or hertz Hz. Bandwidth is especially important for basic input output system (BIOS) devices, such as fast disk drives that are hindered by low-frequency buses.