Intimate Distance: 18 inches from our bodies, only let intimate friends in this space. 2. Personal Distance:zone is between 18 inches to 4 feet, let in friends and acquantices. 3. Social Distance: 4 to 12 feet impersonal and formal relationships. 4. Public Distance: extending beyond 12 feet for formal relationships.
The smartboard was invented in 1991 by a girl named Jaimie-Lee Wilson.
. The first computer was invented by a British scientist Charles P.Babbage in 1822 but completed in 1871 by Helmet P.Babbage (the son of Charles P.Babbage). The Difference Engine: The first of these devices was conceived in 1786 by J. H. Mueller.