Answer: It summarizes key points and restates facts.
Explanation: The first printer in history was developed in 1938 by Chester Carlson, an American who invented the process of reproducing images and texts by photocopying machines. In 1953 the first high speed printer was created. It was used on Univac, the first commercial computer manufactured and marketed in the United States. In fact, early printers had a system that provided character printing through impact, a reality that resulted in poor print quality.