A typewriter is a machine, or an electronic device with a set of buttons that, when pressed, cause the letters to be printed on a document, usually paper. From the beginning of its invention before 1870 to the 20th century, typewriters were widely used by professional writers and office workers.
The typewriter reached its peak production in the 50s, when Smith-Corona sold 12 million devices in the last quarter of 1953. In the 80s the computer began to shift the role of typewriter. In 2009 there were approximately 400 thousand typewriters sold worldwide.
Although today the whole world has ignored the use of typewriter technology, India has proved to be the last base of defense use of typewriters. "source"