TOPICS SUMARIES

COMPUTER HISTORY

Computer: Machine capable of performing a sequence of operations by a program, so that processing is performed on a set of input data, resulting in another set of output data.

Types of computer

Ø  Analog computer: is a form of computer that uses the continuously changeable aspects of physical phenomena such as electrical, mechanical, or hydraulic quantities to model the problem being solved.

Ø  Digital computer: It operates on data, including magnitudes, letters, and symbols, that are expressed in binary form—i.e., using only the two digits 0 and 1. By counting, comparing, and manipulating these digits or their combinations according to a set of instructions held in its memory.

GENERATIONS

Ø  First Generation: 1937-1946- in 1937 the first electronic digital computer was built by Dr. John V. Atanasoff and Clifford Berry. It was called the Atanasoff-Berry computer (ABC). In 1943 an electronic computer name the colossus was built for the military.

Ø  Second Generation: 1947-1962- This generation of computers used transistor instead of vacuum tubes which were more reliable. In 1951 the first computer for commercial used was introduced to public; the Universal Automatic Computer (UNIVAC).

Ø  Third Generation: 1963-present- The invention of integrated circuit brought us the third generation of computers. Which this invention computer became smaller, more powerful more reliable and they are able to run many different programs at the same time.

Ø  Four Generation: Microprocessors appear to be breakthrough in microelectronic, integrated circuits are high density and with impressive speed.

Ø  Fifth Generation: Japan launched in 1983 called “agenda of the fifth generation of computers”, with the explicit goals of producing machines with real innovations in above criteria. And in United States and is active in developing a program similar objectives.

EVOLUTION OF THE WEB

The web today is a growing universe of interlinked web apps, teeming with videos, photos, and interactive contact. What the average user doesn't see is the interplay of web technology and browsers that makes all this possible.

Kind of web:

Ø  Web 1.0: Basic Internet

Ø  Web 2.0: The Social Network of Collaboration

Ø  Web 3.0: The Semantic Network

Ø  Web 4.0: The Mobile Network

Ø  Web 5.0: The Sensory Emotional Network