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Header of an unclassified Department of State telegram with the "SIPDIS" tag marked in red. The Secret Internet Protocol Router Network (SIPRNet) is "a system of interconnected computer networks used by the U.S. Department of Defense and the U.S. Department of State to transmit classified information (up to and including information classified SECRET) by packet switching over the 'completely ...
The Altair 8800 is a microcomputer designed in 1974 by MITS and based on the Intel 8080 CPU. [2] Interest grew quickly after it was featured on the cover of the January 1975 issue of Popular Electronics [3] and was sold by mail order through advertisements there, in Radio-Electronics, and in other hobbyist magazines.
Personal computers normally store personal files, and often the owner/user is responsible for routine maintenance such as removing unwanted files and virus-scanning. Some computers in a business setting are for one user but are also served by staff with protocols to ensure proper maintenance.
Engelbart's work directly led to the advances at Xerox PARC. Several people went from SRI to Xerox PARC in the early 1970s. In 1973, Xerox PARC developed the Alto personal computer. It had a bitmapped screen, and was the first computer to demonstrate the desktop metaphor and graphical user interface (GUI). It was not a commercial product, but ...
Olivetti's first modern personal computer, the M20, featuring a Zilog Z8000 CPU, was released in 1982. [2]The M20 was followed in 1983 by the M24, [3] a clone of the IBM PC using DOS and the Intel 8086 processor (at 8 MHz) instead of the Intel 8088 used by IBM (at 4.77 MHz).
HCL Notes (formerly Lotus Notes then IBM Notes [2] [3]) is a proprietary collaborative software platform for Unix (), IBM i, Windows, Linux, and macOS, sold by HCLTech. [4] The client application is called Notes while the server component is branded HCL Domino.
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The original GUI was developed on the Xerox Alto computer system at Xerox Palo Alto Research Center in the early 1970s and commercialized by many vendors throughout the 1980s and 1990s. Since the late 1990s, there have been three operating systems in widespread use on personal computers: Apple Inc.'s macOS, the open source Linux, and Microsoft ...