Ingelbart Douglas, the inventor of the computer "mouse", the first service to exchange e-mail, and who worked on developing the first versions of Internet networks, died Wednesday at the age of 88 years in federal U.S. state of California.
The most famous invention of Douglas Ingelbart a computer "mouse" device that converts mechanical movements into electronic signals that allows the user to control the computer. Ingelbart patented this invention in 1970, but it has developed in the late 1960s. The idea of managing the PC through mechanical movements within the said period was far ahead of its time.
Commercial use of "mouse" was launched only in 1984, when Apple Company developed "mouse" as one of the key elements for its new PC Macintosh. Since the mid-1980s they have sold billions of devices total worldwide, but Ingelbart failed to enrich based on copyright, because in 1987 was the deadline by which time he owned the exclusive copyright.
Ingelbart also has a significant contribution to the development of other computer and Internet technologies. Thus, his laboratory participated in developing the network of U.S. government ARPANet, which became the forerunner of the modern Internet.
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