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
Question 1 What are the different stages of evolution of Computer Architecture? Explain in detail Question 2 What are the components of Instruction Set architecture? Discu

Question 1 Elaborate the various steps in performing a Mail Merge. Execute one mail merge operation for sending invitation for a conference which is being conducted in your organi

What constitutes ERP? ERP typically comprises a client server architecture, fourth generation language, RDBMS and graphical user interface in an open systems environment. It

Ask question #Minimum assignment on generations of computers 100 words accepted#

1. What actions need to be taken when a program terminates or a process is killed? What if that process destruction is not the consequence of normal termination, but rather is the

Computer Generations: From the early 1940's to the present, computer scientists have been able to identify clear-cut stages in the development of computer technology. With eac

What Features Should the Software Contain? Although the needs of every nursing department, hospital, pharmacy, would vary, certain common features are desirable in the software

Reflex agent-Artificial Intelligence If an agent decides and executes an action in response to a sensor input without consultation of its world, then it may be considered a ref

Question 1 Bring out the advantages of Linux Operating systems Question 2 Match the Symbols with their respective file types              Symbol               File N

Question 1 Convert the following binary numbers to decimal 101110 1110101 110110 101010 110010 Question 2 Explain CPU module and types of transfers betwe