What does a typewriter contain?

The typewriter is a writing machine that produces characters similar to typeset print by means of a manually operated keyboard that actuates a set of raised types, which strike the paper through an inked ribbon. The first Remington type writer only printed capital letters. A model that was made in 1878 used a shift key to raise and lower type bars. By 1901, John Underwood was producing a machine that had a back space, tab, and ribbon selector for raising and lowering the ribbon.