Computer Keyboard

A computer keyboard is a built-in or peripheral input device modeled after the typewriter keyboard, using an arrangement of keys that act as mechanical levers or electronic switches, and it replaced earlier punched-card and paper-tape input methods to become the main way of interacting with computers from the 1970s onward. The teleprinter, whose keyboard-driven design underlies the modern computer keyboard, was developed in its more contemporary form between 1907 and 1910 by the American mechanical engineer Charles Krum and his son Howard, with early contributions from the electrical engineer Frank Pearne. The keyboard remained the primary computer peripheral until the mouse reached consumers in 1984 and, later, the touchscreen in the 2000s, though it remains the standard method of entering text on nearly all computers.