Demodulate receives analog signals and transforms them back into digital data so your computer can process it.
Modems take on many sizes, shapes, styles and capabilities.
Over the past several years, great strides have been made in the progress of their capabilities. On the left are links to discussions on today's most popular modems. Satellite has some great advantages, but still retains some shortfalls. Wireless is one of the fairly new kids on the block. It is great from the mobility standpoint, but most of them are typically slow.