Monday, May 13, 2013

nguyen chau toan

How Does a Computer Process Information?


What are the characteristics capabilities limitations of computer?


Speed, Reliability, Storage Capacity and Productivity
Computers of all sizes have common characteristics -- speed, reliability, storage capacity, and productivity. Computers are the foundation of business, travel, and leisure life today. Computers provide the processing speed required by all facets of society. The quick service we expect at the bank, at the grocery store, on the stock exchange, and on the Internet are dependent on the speed of computers. Can you imagine our world without computers?
Computers are extremely reliable as well. Most errors are caused by humans, not computers. Computers are capable of storing enormous amounts of data that must be located and retrieved very quickly. The capability to store and retrieve volumes of data is at the core of the Information Age.
Speed, Reliability, Storage Capacity and Productivity
Computers of all sizes have common characteristics -- speed, reliability, storage capacity, and productivity. Computers are the foundation of business, travel, and leisure life today. Computers provide the processing speed required by all facets of society. The quick service we expect at the bank, at the grocery store, on the stock exchange, and on the Internet are dependent on the speed of computers. Can you imagine our world without computers?
Computers are extremely reliable as well. Most errors are caused by humans, not computers. Computers are capable of storing enormous amounts of data that must be located and retrieved very quickly. The capability to store and retrieve volumes of data is at the core of the Information Age.
According to basic theory, computers are the modern form of a theoretical computing machine called a Simple Turing Machine. These machines are purely logical - they can perform logical functions like adding and subtracting, multiplying and dividing, and can be made to perform more complex functions like algebra through a series of instructions called an algorithm. They are, however, incapable of logical leaps. They cannot conceive of infinity. They cannot process imaginary numbers (well, they can now, since we've developed the obscenely complex algorithms necessary to make them do so). In short, they can't think like a human can. (Though artificial intelligences these days are good enough that they can mimic human behavior reasonably well, especially if you're applying the upper end of AI theory - on the other hand, they're also very processor intensive, which is why simpler ideas are used where possible). On the plus side, the theoretical Simple Turing Machine concept was developed specifically for high speed computation. In essence, the idea that a computer is a REALLY fast idiot. It needs you to explain everything in near-infinite detail (computer programming), but once you're done, it can process each step way faster than any human possibly could.

If you're wondering, the Complex Turing Machine is basically magic. If a simple turing machine is faced with a dozen choices, one of which is right, and the correctness can only be determined after selecting a choice, it can follow each choice until it is proven wrong, and systematically scroll through the choices until it comes up with the right path. (this is like finding the right path through a maze by taking every path until you get through). A complex turing machine somehow intuitively selects the correct answer each time, thus vastly reducing processing time. It'd be really nice if we could build even one Complex Turing Machine, but I doubt it'd happen.

In summary:

Capabilities of a computer: Can do things really fast.
Limitations of a computer: Can't think intuitively or use abstract concepts like infinity.

what are 3 capabilities of computer

That all depends on the processing power and the hardware installed. You can have a computer which is very simple like a calculator to a supercomputer, please be more specific

What is the computer's capabilities and limitations?



capability is that it can do anything, as required and programmed by the programmers, and users. 

but the major limitation is that we, the Human cannot fill life into it.

A computer has the following capabilities.
a. Speed : Although a computer works on two state of electricity i.e. on and off, it processes data at a high speed. This is one of the important features of the computer.

b. Accuracy: The computer is not only fast but it is also accurate. The computer does not do any mistake. If the wrong insturctions or data are supplied then the result produced by the computer is wrong. There is a term which describes accuracy of the computer and that term is GIGO.

c. Storage capacity: The computer can store huge amount of data and inforamtion for the current and future uses.

d. Diligence: The computer is deligent machine. It can perform the same task repeatedly without losing accuracy and speed.

e. Versatile: The computer can be used for doing different types of taks. One can use the computer for data processing, video editing, preparing documents, etc.

Friday, May 10, 2013

Members of group 1

Members of group:


  1.  Nguyen Chau Toan
  2.  Nguyen Thanh Long
  3.  Truong Thi Kim Lien
  4.  Le Thanh Vu
  5.  Le Minh Tuan