STUDENTPOINT12

HISTORY OF INTERNET The internet has gained immense popularity and emerged as an important and efficient means of communication. The idea of introducing the Internet was to allow people to share information using their computers across the world. In 1962, J.C.R Licklider first proposed the development of a global network of computers. The same year, he moved to Defense Advanced Research Projects Agency(DARPA) to develop the network. Another scientist, Leonard Kleinrock, developed the theory of packet switching, which was used as a basis for the Internet connections. In 1969, the sicentist at DARPA succeeded in networking two computers, Known as ARPANET( Advanced Research Projects Agency Network), which was based on packet switching. ARPANET was developed as a means of communication for the United States military services. ARPANET was a big success. This invited the attention on the National Science Foundation (NSF), as US federal agency for creation a contemporary better high capac...

I, Computer: Definition A computer is a machine that can be programmed to manipulate symbols. Its principal characteristics are: It responds to a specific set of instructions in a well-defined manner. It can execute a prerecorded list of instructions (a program). It can quickly store and retrieve large amounts of data. Therefore computers can perform complex and repetitive procedures quickly, precisely and reliably. Modern computers are electronic and digital. The actual machinery (wires, transistors, and circuits) is called hardware; the instructions and data are called software. All general-purpose computers require the following hardware components: Central processing unit (CPU): The heart of the computer, this is the component that actually executes instructions organized in programs ("software") which tell the computer what to do. Memory (fast, expensive, short-term memory): Enables a computer to store, at least temporarily, data, program...