Block diagram of digital computer, Basic Computer Science

Block diagram of digital computer:

The general pattern of computer architecture has remained unchanged over the last four decades or so. It has a single processor, which accepts data from an input device or obtains it from backing storage, performs some operations on it, and returns the processed data to storage or to an output device. Information is passed between the components by means of a high speed data channel, (see the block diagram of a digital computer) known as a bus. The operation is serial, with a single operation being performed on a single data item.  


2040_block diagram of a digital computer.png

The result is a general purpose computer, able to be used for different tasks. Over the years many improvements have been made to this sort of computer to improve its speed and power. One example is the emergence of RISC (Reduced Instruction Set Computing) machines, which give faster performance for some types of applications by using a smaller set of machine instructions. It maybe mentioned that the main change in computer architecture that is now widens/ay is the emergence of parallel processing. In other words, parallel processing machines can perform the same operation on a number of data items at a time, or may have a number of processing units operating independently, performing different operations on different data items simultaneously. Parallelism has been first developed for super-computers. However, the parallelism requires special software for its applicability. Hence its utility is somewhat limited. It may be mentioned that parallel processor machines are now beginning to be used for database applications. Parallel processing is now becoming generally available in the form of transputer which can be attached with or added to microcomputer systems to improve their performance. Most of the professionals seeking to automate some aspects of information management will be using microcomputers. However, it is desirable to know developments in larger machines.  


Posted Date: 10/24/2012 4:09:07 AM | Location : United States

Related Discussions:- Block diagram of digital computer, Assignment Help, Ask Question on Block diagram of digital computer, Get Answer, Expert's Help, Block diagram of digital computer Discussions

Write discussion on Block diagram of digital computer
Your posts are moderated
Related Questions
Web Browser:   A Web browser is software application that enables you to find, retrieve, and display information available on the World Wide Web (WWW). Browser also allows you

HTML is a Formatting language which is most commonly used for web documents.

Question 1 Explain with an example the three kinds of relationships that are most important in object oriented modeling Question 2 Describe the Common Modeling techniques in

TYPES OF PC:  In general,  basic function of all the computers is same i.e. Computers accept data as input, perform operations on these data and generates the desired output t

Question 1 What are the different kinds of editing? Explain them in detail Question 2 Write a long note on the viewfinder of a camera Question 3 Describe the various typ

QUESTION (a) Draw an annotated diagram explaining how data is transmitted to web servers during a standard form submit event. (b) What in your opinion makes a bad web site?

General Considerations for Search If we may specify the starting state, the operators and the goal check for a search problem, then we know from where to start, how to move and

Question 1 Explain the basic structure of a C program with an example 2 What would be the value of x after execution of the following statements? 3.What are the commonly u

Write a program to find the area under the curve y = f(x) between x = a and x = b, integrate y = f(x) between the limits of a and b. The area under a curve between two points can b