Also known as a phone, a telephone is a device that converts voice communication into electrical signals that can be transferred to other telephones
and heard. Telephones enable people to communicate with other people all over the world
and is widely credited as being first invented by Alexander Graham Bell in 1876.
There are three primary types of phones in use today. The traditional corded
phone which could be rotary dial like that shown in the picture to the right or
have buttons, the cordless or wireless phone also shown in the picture to the
right, and the cell phone.
Also known as a phone, a telephone is a device that converts voice communication into electrical signals that can be transferred to other telephones
and heard. Telephones enable people to communicate with other people all over the world
and is widely credited as being first invented by Alexander Graham Bell in