Either natural gas, liquid propane, or diesel gas are utilized to run home standby generatorâs internal combustion engine to help avoid any disruption of electrical power. 1. Generac 6461 Guardian Series - The 6461 Guardian Series of automatic standby generators offer safe, clean air-cooled, and efficient operation.
The most famous implementation of hypertext is the World Wide Web.   Another Answer  A special type of database system, invented by Ted Nelson in the 1960s, in which objects (text, pictures, music, programs, and so on) can be creatively linked to each other.
The History of Word Search. You can imagine that Word Search puzzles have been around for centuries. Crosswords first appeared in 1890, and Scrabble was invented in 1938. But in fact the first Word Search puzzle didn't appear until 1968. It was created by Norman E. Gibat and published in a small classified-listings newspaper called the Selenby Digest in Norman, Oklahoma.