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1977: Apple II, microcomputer of 8 bits (Apple Computer Corporation), based on MOS Technology 6502. 1977: David Clark and his group at the Massachussets Institute of Technology demonstrate that TCP/IP can be simplified for operating with microcomputers, producing a first implementation for the Alto of Xerox at Palo Alto Research Centre (first personal work station and graphic operating system), and in 1981 a second implementation for IBM Personal Computer. December 1971: Network Control Protocol, first host to host protocol of Arpanet, by S. Crocker (Network Work Group). 1973: CP/M, Control Programme for Microprocessors, operating system of 8 bits by Gary Kildall (Integrated Electronics and Intergalactic Digital Research). 1976: Apple I, microcomputer of 8 bits (Apple Computer Corporation), based on MOS Technology 6502. 1976: CP/M, Control Programme for Microcomputers or Control Programme Monitor is marketed by Gary Kildall (Intergalactic Digital Research). This new one would be later called Transmission Control Protocol / Internet Protocol, whose fundamental characteristics were defined by Mr. Kahn in a report named "Communication Principles for Operating Systems": -Each local area network is independent, internal changes are not mandatory for its connection to Internet. Efficiency in implementation and in performance among local area networks. Late 1970's: networks for specific purposes make their appearance in North America, such as MFEnet and HEPnet (Department of Energy), Span (National Aeronautics and Space Administration), CSnet (by Rick Adrion, David Farber and Larry Landweber, initially subsided by the National Science Foundation), Usenet (not limited to a community of specialists, it was based on the Unix to Unix Copy Communications Protocol for Unix operating system of Bell American Telegraph & Telephone).

1979: Usenet news groups start from Duke University. 1979: Visi Calc, Visible Calculator spread sheet, first commercial programme for microcomputers, by Daniel Bricklin and Robert Frankston (Software Arts). October 1972: at the International Conference on Computer Communication, Robert Kahn presented Arpanet for the first time to the public, as a network of open architecture with the name of "Interconnected Networks", "Internet" or "Internetting". The computers interchanged meaningless data while about twenty people watched the historical event, which MARKS THE START OF INTERNET. The Transfer Control Protocol / Internet Protocol substituted the Network Control Protocol simultaneously for all hosts. It makes possible the insertion of elements to form an integrated circuit, as it had been proposed by G. W. A. Dummer in 1952. Integrated circuits gradually substituted printed circuits as main computer processors, although printed circuits remained in use for simpler purposes. The experiment is a success, but it shows that available telephone lines are still inadequate, confirming Leonard Kleinrock's proposal for packet interchange instead of circuits. C: structured modular language, similar to Pascal, created by Dennis Ritchie (Bell Laboratories, a part of AT & T Telephone) in 1972-1974. The name comes from two experimental languages that existed with the names of 'A' and 'B', based on the BCPL language.

Most high level languages possess the means of writing part or all of the programme in low level code or also in a medium level language. That means for every standard work week, employees can take a full day to work on a project unrelated to their normal workload. A team that advertently fells the king prematurely automatically loses; in another version of the rules (in which a resurrection king is allowed), it means that team forfeits the rest of its turn, the king is righted, and the other teams goes on the attack. The rest of the world in 1990 was not yet connected to Internet, but to Bitnet or to some other network, or simply unconnected. 1970: it is calculated the existence of about 100 000 computers in the world. According to Paul Brown, Red Baron's Publisher and antiques guru, the trick to finding antiques is a combination of participating in the word-of-mouth antiques network and "beating the bush." Red Baron rarely has difficulty locating and obtaining pieces; they have antiques and art experts stationed in different regions all over the world scouring estate sales and other antique markets for pieces to ship back to Atlanta.

Later it added elements to reach 7 Kilobytes of Random Access Memory and accepted Basic programming language, adapted to Altair 8800 by Paul Allen and William Bill Gates (Micro-Soft Corporation). A User Datagramme Protocol is added for programmes that need only IP, choosing not to use the control that is provided by TCP. It added separately compilable procedures with parameters. September 1973: Robert Kahn and Vinton Cerf present the new TCP/IP protocol at a special meeting of the International Network Work Group, formed at Sussex University and led by Mister Cerf. 1974: DARPA signs contracts with Stanford (represented by Vinton Cerf), U. C. L. (by Peter Kirstein) and B. B. N. (by Ray Tomlinson), for implementing TCP/IP. 1976: microprocessor Texas Instruments TMS-9900 of 16 bits 1976: microcomputer PET Personal Electronic Transactor (Commodore), based on Zilog Z-80 A. 1977: microprocessor Signetics 2650 1977: microprocessor Fairchild F8 1977: microprocessor Mostek 3870 1977: microprocessors Motorola 6801, Motorola 6802 and Motorola 6809 1977: microcomputer TK (Sinclair), based on Zilog Z-80 A. 1977: microcomputer TRS-80 (Tandy Radio Shack), based on Zilog Z-80 A, input by keyboard or cassette tape, what is billiards output by cathodic ray tube screen or cassette tape.