The Pakistan Telecommunication Authority (PTA), the licensing authority for electronic services, has imposed a number of restrictions of the use of the Internet. Licenses to ISPs (Internet Service Provider) will be issued under the terms of the highly restrictive Telephone and Telegraph Act of 1885.
Under the terms of the agreement, users are prohibited from using any sort of data encryption and have to agree that their electronic communications may be monitored by government agencies. Transmission or reception of obscene or objectionable material is also prohibited and may lead not only to immediate disconnection of service but also to prosecution by authorities.
Users of electronic services will also have to submit to service provider's copies of the National Identity Card. According to the terms of issuance of licenses, service providers will also be responsible for ensuring that the programs and information provided through electronic services do not "come into direct clash with accepted standards of morality and social values in Pakistan."
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Since the 1970s there had been a growing trend towards the use of computer programs in manufacturing companies. Especially functions related to design and production, but also business functions should be facilitated through the use of computers.
Accordingly the CAD/CAM technology, related to the use of computer systems for design and production, was developed. CAD (computer-aided design) was created to assist in the creation, modification, analysis, and optimization of design. CAM (computer-aided manufacturing) was designed to help with the planning, control, and management of production operations. CAD/CAM technology, since the 1970s, has been applied in many industries, including machined components, electronics products, equipment design and fabrication for chemical processing.
To enable a more comprehensive use of computers in firms the
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Following the invention of the first
Also, ensuing the introduction of the minicomputer in the mid 1970s by the early 1980s a market for personal computers (PC) was established. As computers had become easier to use and cheaper they were no longer mainly utilized in offices and manufacturing, but also by the average consumer. Therefore the number of personal computers in use more than doubled from 2 million in 1981 to 5.5 million in 1982. Ten years later, 65 million PCs were being used.
Further developments included the creation of mobile computers (laptops and palmtops) and especially networking technology. While mainframes shared time with many terminals for many applications, networking allowed individual computers to form electronic co-operations.
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RTMark is a group of culture jammers applying a brokerage-system that benefits from "limited liability" like any other corporation. Using this principle, RTMark supports the sabotage (informative alternation) of corporate products, from dolls and children's learning tools to electronic action games, by channeling funds from investors to workers. RTMark searches for solutions that go beyond public relations and defines its "bottom line" in improving culture. It seeks cultural and not financial profit.
Strategies and Policies
RTMark is engaged in a whole lot of projects, which are designed to lead to a positive social change. Projects with roughly similar intent, risk, or likelihood of accomplishment are grouped into "fund families", like for example "The Frontier Fund". This fund is dedicated to challenge naive, utopic visions of the "global village", focusing on the implications of allowing corporations and other multinational interests to operate free of social context.
RTMark pursues its projects through donations by individuals, which can invest in a certain fund, whereby an exact specification of how the donated money should be used can be made. RTMark has repeatedly gained attention through its projects, especially with its spoof websites, like the ones of Rudy Giuliani and the WTO, or its campaign against eToys, which prevents the Internet art group etoy from using the domain etoy.com.
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ZaMir.net started in 1992 trying to enable anti-war and human rights groups of former Yugoslavia to communicate with each other and co-ordinate their activities. Today there are an estimated 1,700 users in 5 different Bulletin Board Systems (Zagreb, Belgrade, Ljubljana, Sarajevo and Pristiana). Za-mir Transnational Network (ZTN) offers e-mail and conferences/newsgroups. The ZTN has its own conferences, which are exchanged between the 5 BBS, and additionally offers more than 150 international conferences. ZTN aim is to help set up systems in other cities in the post-Yugoslav countries that have difficulty connecting to the rest of the world.
History
With the war in Yugoslavia anti-war and human rights groups of former Yugoslavia found it very difficult to organize and met huge problems to co-ordinate their activities due to immense communication difficulties. So in 1992 foreign peace groups together with Institutions in Ljubljana, Zagreb and Belgrade launched the Communications Aid project. Modems were distributed to peace and anti-war groups in Ljubljana, Zagreb, Belgrade and Sarajevo and a BBS (Bulletin Board System) installed.
As after spring 1992 no directs connections could be made they were done indirectly through Austria, Germany or Britain, which also enabled a connection with the worldwide networks of BBS's. Nationalist dictators therefore lost their power to prevent communication of their people. BBS were installed in Zagreb and Belgrade and connected to the APC Network and associated networks. Za-mir Transnational Network (ZTN) was born.
Strategies and Policies
With the help of ZaMir's e-mail network it have been possible to find and coordinate humanitarian aid for some of the many refugees of the war. It has become an important means of communication for humanitarian organizations working in the war region and sister organizations form other countries. It helps co-ordinate work of activists form different countries of former Yugoslavia, and it also helps to coordinate the search for volunteers to aid in war reconstruction. ZTN also helped facilitate exchange of information undistorted by government propaganda between Croatia, Serbia and Bosnia. Independent magazines like Arkzin (Croatia) and Vreme (Serbia) now publish electronic editions on ZTN.
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The telephone was not invented by Alexander Graham Bell, as is widely held to be true, but by Philipp Reiss, a German teacher. When he demonstrated his invention to important German professors in 1861, it was not enthusiastically greeted. Because of this dismissal, no financial support for further development was provided to him.
And here Bell comes in: In 1876 he successfully filed a patent for the telephone. Soon afterwards he established the first telephone company.
Also called microcircuit, the integrated circuit is an assembly of electronic components, fabricated as a single unit, in which active semiconductor devices (
Hieroglyphs are pictures, used for writing in ancient Egypt. First of all those pictures were used for the names of kings, later more and more signs were added, until a number of 750 pictures
Invented by Joseph Marie Jacquard, an engineer and architect in Lyon, France, the punch cards laid the ground for automatic information processing. For the first time information was stored in binary format on perforated cardboard cards. In 1890 Hermann Hollerith used Joseph-Marie Jacquard's punch card technology for processing statistical data retrieved from the US census in 1890, thus speeding up data analysis from eight to three years. His application of Jacquard's invention was also used for programming computers and data processing until electronic data processing was introduced in the 1960's. - As with
Paper tapes are a medium similar to Jacquard's punch cards. In 1857 Sir Charles Wheatstone applied them as a medium for the preparation, storage, and transmission of data for the first time. By their means, telegraph messages could be prepared off-line, sent ten times quicker (up to 400 words per minute), and stored. Later similar paper tapes were used for programming computers.
The bandwidth of a transmitted communications signal is a measure of the range of frequencies the signal occupies. The term is also used in reference to the frequency-response characteristics of a communications receiving system. All transmitted signals, whether analog or digital, have a certain bandwidth. The same is true of receiving systems.
Generally speaking, bandwidth is directly proportional to the amount of data transmitted or received per unit time. In a qualitative sense, bandwidth is proportional to the complexity of the data for a given level of system performance. For example, it takes more bandwidth to download a photograph in one second than it takes to download a page of text in one second. Large sound files, computer programs, and animated videos require still more bandwidth for acceptable system performance. Virtual reality (VR) and full-length three-dimensional audio/visual presentations require the most bandwidth of all.
In digital systems, bandwidth is data speed in bits per second (bps).
Source: Whatis.com
To perform manufacturing firm's functions related to design and production the CAD/CAM technology, for computer-aided design and computer-aided manufacturing, was developed. Today it is widely recognized that the scope of computer applications must extend beyond design and production to include the business functions of the firm. The name given to this more comprehensive use of computers is computer-integrated manufacturing (CIM).
The WAP (Wireless Application Protocol) is a specification for a set of communication protocols to standardize the way that wireless devices, such as cellular telephones and radio transceivers, can be used for Internet access, including
While Internet access has been possible in the past, different manufacturers have used different technologies. In the future, devices and service systems that use WAP will be able to interoperate.
Source: Whatis.com
Communications satellites are relay stations for radio signals and provide reliable and distance-independent high-speed connections even at remote locations without high-bandwidth infrastructure.
On point-to-point transmission, the transmission method originally employed on, satellites face increasing competition from
In the future, satellites will become stronger, cheaper and their orbits will be lower; their services might become as common as satellite TV is today.
For more information about satellites, see How Satellites Work (
Probably the most significant Internet service, the World Wide Web is not the essence of the Internet, but a subset of it. It is constituted by documents that are linked together in a way you can switch from one document to another by simply clicking on the link connecting these documents. This is made possible by the Hypertext Mark-up Language (HTML), the authoring language used in creating World Wide Web-based documents. These so-called hypertexts can combine text documents, graphics, videos, sounds, and
Especially on the World Wide Web, documents are often retrieved by entering keywords into so-called search engines, sets of programs that fetch documents from as many
Among other things that is the reason why the World Wide Web is not simply a very huge database, as is sometimes said, because it lacks consistency. There is virtually almost infinite storage capacity on the Internet, that is true, a capacity, which might become an almost everlasting too, a prospect, which is sometimes
According to the Internet domain survey of the
Writing and calculating came into being at about the same time. The first pictographs carved into clay tablets are used for administrative purposes. As an instrument for the administrative bodies of early empires, who began to rely on the collection, storage, processing and transmission of data, the skill of writing was restricted to a few. Being more or less separated tasks, writing and calculating converge in today's computers.
Letters are invented so that we might be able to converse even with the absent, says Saint Augustine. The invention of writing made it possible to transmit and store information. No longer the ear predominates; face-to-face communication becomes more and more obsolete for administration and bureaucracy. Standardization and centralization become the constituents of high culture and vast empires as Sumer and China.
Fiber-optic cable networks may become the dominant method for high-speed Internet connections. Since the first fiber-optic cable was laid across the Atlantic in 1988, the demand for faster Internet connections is growing, fuelled by the growing network traffic, partly due to increasing implementation of corporate networks spanning the globe and to the use of graphics-heavy contents on the
Fiber-optic cables have not much more in common with copper wires than the capacity to transmit information. As copper wires, they can be terrestrial and submarine connections, but they allow much higher transmission rates. Copper wires allow 32 telephone calls at the same time, but fiber-optic cable can carry 40,000 calls at the same time. A capacity,
Copper wires will not come out of use in the foreseeable future because of technologies as
For technical information from the Encyclopaedia Britannica on telecommunication cables, click
An entertaining report of the laying of the FLAG submarine cable, up to now the longest fiber-optic cable on earth, including detailed background information on the cable industry and its history, Neal Stephenson has written for Wired: Mother Earth Mother Board. Click
Susan Dumett has written a short history of undersea cables for Pretext magazine, Evolution of a Wired World. Click
A timeline history of submarine cables and a detailed list of seemingly all submarine cables of the world, operational, planned and out of service, can be found on the Web site of the
For maps of fiber-optic cable networks see the website of
A Local Area Network is an office network, a network restricted to a building area.