Who is the inventor of dot matrix printer?

Answer 1

First developed at Xerox PARC by Gary Starkweather and released in 1971, a laser printer is a type of printer that utilizes laser technology to print images on the paper. Laser printers are often used in corporate, school, and other environments that require print jobs to be completed quickly and in large quantities. To the right is an example of what a laser printer may look like. This picture is of the Lexmark C782n laser printer. Finally, below is a chart of the steps a laser printer takes to print.

Answer 2

The people who invented the laser pointers were Alferov and Kroemer they were given the prize for their development within the field of semiconductor physics, where they had studied the type of substances that was first used to build semiconductor lasers, that is, the kind of miniature lasers that today have become the cheapest, lightest, and smallest laser pointers.

Answer 3

I don't know for certain, but IBM used a form of dot matrix printer starting in 1949 on their Type 26 Keypunch to print the characters across the top of punchcards as they were being punched. I haven't seen any record of their use prior to this.