DETAILS ABOUT COMPUTER.What is a Computer?
Computer can be defined as, an electronic device that accepts that as an input and process data as an output. Or A Computer is an electronic device that is used to perform repetitive calculations at very high speeds. The computer acts as a data processing device and also stores large amounts of data. This data could be text, pictures, voice, numbers, photographs and other types of information that are used by humans in their day-to-day operations. Life cannot be imagined without computers. In fact, the new millennium is the era of computers and its associated techniques, commonly known as Information Technology (IT). This has being a big solution to human data processing, calculation, storage e.t.c.
Computers help the school children and adults to learn new techniques of study, graphic designs, games and other useful educational applications. They help the college students in preparing reports. They help the office executives in accounts, software development, sales invoicing and manufacturing. They help the libraries in the efficient management of their operations. They run the factories and equipment. They control the satellites and nuclear weapons. They help the young and the old surf through the Internet sites. They are, in fact, indispensable as every operation of human life is incomplete and inefficient without them.
Computers help the school children and adults to learn new techniques of study, graphic designs, games and other useful educational applications. They help the college students in preparing reports. They help the office executives in accounts, software development, sales invoicing and manufacturing. They help the libraries in the efficient management of their operations. They run the factories and equipment. They control the satellites and nuclear weapons. They help the young and the old surf through the Internet sites. They are, in fact, indispensable as every operation of human life is incomplete and inefficient without them.
A computer is a machine that manipulates data according to a set of instructions.
Although mechanical examples of computers have existed through much of recorded human history, the first electronic computers were developed in the mid-20th century (1940–1945). These were the size of a large room, consuming as much power as several hundred modern personal computers (PCs).[1] Modern computers based on integrated circuits are millions to billions of times more capable than the early machines, and occupy a fraction of the space.[2] Simple computers are small enough to fit into a wristwatch, and can be powered by a watch battery. Personal computers in their various forms are icons of the Information Age and are what most people think of as "computers". The embedded computers found in many devices from MP3 players to fighter aircraft and from toys to industrial robots are however the most numerous.
Although mechanical examples of computers have existed through much of recorded human history, the first electronic computers were developed in the mid-20th century (1940–1945). These were the size of a large room, consuming as much power as several hundred modern personal computers (PCs).[1] Modern computers based on integrated circuits are millions to billions of times more capable than the early machines, and occupy a fraction of the space.[2] Simple computers are small enough to fit into a wristwatch, and can be powered by a watch battery. Personal computers in their various forms are icons of the Information Age and are what most people think of as "computers". The embedded computers found in many devices from MP3 players to fighter aircraft and from toys to industrial robots are however the most numerous.
The ability to store and execute lists of instructions called programs makes computers extremely versatile, distinguishing them from calculators. The Church–Turing thesis is a mathematical statement of this versatility: any computer with a certain minimum capability is, in principle, capable of performing the same tasks that any other computer can perform. Therefore computers ranging from a mobile phone to a supercomputer are all able to perform the same computational tasks, given enough time and storage capacity.
Contents:
1 History of computing
2 Stored program architecture
2.1 Programs
2.2 Example
3 Function
3.1 Control unit
3.2 Arithmetic/logic unit (ALU)
3.3 Memory
3.4 Input/output (I/O)
3.5 Multitasking
3.6 Multiprocessing
3.7 Networking and the Internet
4 Further topics
4.1 Hardware
4.2 Software
4.3 Programming languages
4.4 Professions and organizations
5 See also
6 Notes
7 References
8 External links
1 History of computing
2 Stored program architecture
2.1 Programs
2.2 Example
3 Function
3.1 Control unit
3.2 Arithmetic/logic unit (ALU)
3.3 Memory
3.4 Input/output (I/O)
3.5 Multitasking
3.6 Multiprocessing
3.7 Networking and the Internet
4 Further topics
4.1 Hardware
4.2 Software
4.3 Programming languages
4.4 Professions and organizations
5 See also
6 Notes
7 References
8 External links
