Computer History Full Tim

University of Sydney

The University of Sydney was first founded in 1850 and has grown to become one of Australia’s most prestigious educational institutions. With its wide variety of flexible degrees, students are encouraged to take their studies in a direction which suits them best. This versatility ensures that graduates have the skills and the knowledge that they need to start out on a career path that takes them wherever they want to go. By enrolling in the University of Sydney, students will join notable alumni such as former Prime Minister John Howard, former Governor-General William Deane, Tim Friedman from the Whitlams and Nobel Prize winner Sir John Cornforth.

The University of Sydney is also one of the top in the world in terms of research and offers a number of programs and research opportunities in each of its 16 faculties. Promoting the merits of academic freedom, intellectual inquisitiveness and moral ethics, the university offers a very positive environment in which students can undertake research that satisfies their curiosity and the need for progress and development. From medicine and law to arts and education, students can break new ground when completing their assigned research projects.

The university is also very internationally-focused and welcomes students from all over the globe. There are numerous exchange programs on offer so that people from all walks of life can meet and study together on one campus. International students will find themselves learning in a university rich in history and culture, alongside neo-gothic sandstone buildings and a variety of clubs and associations. Facilities, such as lecture halls, laboratories and sports complexes, are all state-of-the-art, ensuring that the past mixes seamlessly with the present in the one positive learning environment.

Academic Programs Designed to give students a solid foundation on which to commence their career paths or step forward to further study, each undergraduate degree offered at the University of Sydney combines a wide range of knowledge, skills and critical thinking to form graduates who are experts in their chosen fields. Below is a sampling of what is currently being offered on campus:

The History of Networking | GallMedia

1960s

In the 1960s, computer networking was essentially synonymous with mainframe computing and telephony services, and the distinction between local and wide area networks did not yet exist. Mainframes were typically “networked” to a series of dumb terminals with serial connections running on RS-232 or some other electrical interface. If a terminal in one city needed to connect with a mainframe in another city, a 300-baud long-haul modem would use the existing analog Public Switched Telephone Network (PSTN) to form the connection. The technology was primitive indeed, but it was an exciting time nevertheless.

The quality and reliability of the PSTN increased significantly in 1962 with the introduction of pulse code modulation (PCM), which converted analog voice signals into digital sequences of bits. DS0 (Digital Signal Zero) became the basic 64-Kbps channel, and the entire hierarchy of the digital telephone system was soon built on this foundation. Next, a device called the channel bank was introduced. It took 24 separate DS0 channels and combined them using time-division multiplexing (TDM) into a single 1.544-Mbps channel called DS1 or T1. (In Europe, 30 DS0 channels were combined to make E1.) When the backbone of the Bell system became digital, transmission characteristics improved due to higher quality and less noise. This was eventually extended all the way to local loop subscribers using ISDN. The first commercial touch-tone phone was also introduced in 1962.

The first communication satellite, Telstar, was launched in 1962. This technology did not immediately affect the networking world because of the latency of satellite links compared to undersea cable communications, but it eventually surpassed transoceanic underwater telephone cables (which were first deployed in 1965 and could carry 130 simultaneous conversations) in carrying capacity. In fact, in 1960 scientists at Bell Laboratories transmitted a communication signal coast to coast across the United States by bouncing it off the moon. Unfortunately, the moon wouldn’t sit still! By 1965, the first commercial communication satellites (such as Early Bird) were deployed.

1970s

While the 1960s were the decade of the mainframe, the 1970s gave rise to Ethernet, which today is by far the most popular LAN technology. Ethernet was born in 1973 in Xerox’s research lab in Palo Alto, California. (An earlier experimental network called ALOHAnet was developed in 1970 at the University of Hawaii.) The original Xerox networking system was known as X-wire and worked at 2.94 Mbps. X-wire was experimental and was not used commercially, although a number of Xerox Alto workstations for word processing were networked together in the White House using X-wire during the Carter administration. In 1979, Digital Equipment Corporation (DEC), Intel, and Xerox formed the DIX consortium and developed the specification for standard 10-Mbps Ethernet, or thicknet, which was published in 1980. This standard was revised and additional features were added in the following decade.

Encyclopedia of computers and computer history

Complete Book of Colleges, 2005

Movies in American History, An Encyclopedia

Graduate Schools in the U.S. 2010

Two Year Colleges 1997, Guide to