what is a computer?

Answer 1

if you have to ask, you don't need one.

Answer 2

Computer is an electronic device for the storage and processing of information. Computers are not very intelligent devices, but they handle instructions flawlessly and fast. They must follow explicit directions from both the user and computer programmer. Computers are really nothing more than a very powerful calculator with some great accessories. Applications like word processing and games are just a very complex math problem. To know more about computers, visit http://techiesbox.com

Answer 3

A computer is a machine which manipulates data according to a list of instructions which makes it an ideal example of a data processing system.

Computers take numerous physical forms.The first devices that resemble modern computers date to the mid-20th century (around 1940 - 1941), although the computer concept and various machines similar to computers existed prior. Early electronic computers were the size of a large room, consuming as much power as several hundred modern personal computers. [1] Modern computers are based on comparatively tiny integrated circuits and are millions to billions of times more capable while occupying a fraction of the space. [2] Today, simple computers may be made small enough to fit into a wrist watch and be powered from a watch battery. Personal computers in various forms are icons of the information age and are what most people think of as "a computer". However, the most common form of computer in use today is by far the embedded computer. Embedded computers are small, simple devices that are often used to control other devices—for example, they may be found in machines ranging from fighter aircraft to industrial robots, digital cameras, and even children's toys.

The ability to store and execute lists of instructions called programs makes computers extremely versatile and distinguishes 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 with capability and complexity ranging from that of a personal digital assistant to a supercomputer are all able to perform the same computational tasks given enough time and storage capacity.
Contents
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* 1 History of computing
* 2 Stored program architecture
o 2.1 Programs
o 2.2 Example
* 3 How computers work
o 3.1 Control unit
o 3.2 Arithmetic/logic unit (ALU)
o 3.3 Memory
o 3.4 Input/output (I/O)
o 3.5 Multitasking
o 3.6 Multiprocessing
o 3.7 Networking and the Internet
* 4 Further topics
o 4.1 Hardware
o 4.2 Software
o 4.3 Programming languages
o 4.4 Professions and organizations
* 5 See also
* 6 Notes
* 7 References

History of computing

Main article: History of computing

The Jacquard loom was one of the first programmable devices.
The Jacquard loom was one of the first programmable devices.

It is difficult to define any one device as the earliest computer. The very definition of a computer has changed and it is therefore impossible to identify the first computer. Many devices once called "computers" would no longer qualify as such by today's standards.

Originally, the term "computer" referred to a person who performed numerical calculations (a human computer), often with the aid of a mechanical calculating device. Examples of early mechanical computing devices included the abacus, the slide rule and arguably the astrolabe and the Antikythera mechanism (which dates from about 150-100 BC). The end of the Middle Ages saw a re-invigoration of European mathematics and engineering, and Wilhelm Schickard's 1623 device was the first of a number of mechanical calculators constructed by European engineers.

However, none of those devices fit the modern definition of a computer because they could not be programmed. In 1801, Joseph Marie Jacquard made an improvement to the textile loom that used a series of punched paper cards as a template to allow his loom to weave intricate patterns automatically. The resulting Jacquard loom was an important step in the development of computers because the use of punched cards to define woven patterns can be viewed as an early, albeit limited, form of programmability.

In 1837, Charles Babbage was the first to conceptualize and design a fully programmable mechanical computer that he called "The Analytical Engine".[3] Due to limited finance, and an inability to resist tinkering with the design, Babbage never actually built his Analytical Engine.

Large-scale automated data processing of punched cards was performed for the U.S. Census in 1890 by tabulating machines designed by Herman Hollerith and manufactured by the Computing Tabulating Recording Corporation, which later became IBM. By the end of the 19th century a number of technologies that would later prove useful in the realization of practical computers had begun to appear: the punched card, Boolean algebra, the vacuum tube (thermionic valve) and the teleprinter.

During the first half of the 20th century, many scientific computing needs were met by increasingly sophisticated analog computers, which used a direct mechanical or electrical model of the problem as a basis for computation. However, these were not programmable and generally lacked the versatility and accuracy of modern digital computers.

Answer 4

What are you using?

Answer 5

its a box and a big screen with a key board and a mouse and two small boxes that make sound get it????

Answer 6

It is an internet hate machine.

Answer 7

the thing ur just using rite now

Answer 8

you're using one to post this question

Answer 9

It`s a thingy in a big metal box with flashing lights . It`s smarter than many people ................................................ if you know what I mean .

Answer 10

lol? u 4 real ?