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.
An additional possibility is the undeciphered Rongorongo script of Easter Island. It is debated whether this is true writing, and if it is, whether it is another case of cultural diffusion of writing. The oldest example is from 1851, 139 years after their first contact with Europeans.One explanation is that the script was inspired by Spain 's written annexation proclamation in 1770.t is generally agreed that true writing of language (not only numbers) was invented independently in at least two places: Mesopotamia (specifically, ancient Sumer) around 3200 BC and Mesoamerica around 600 BC.