Information Technology

microprocessor programming

2009-07-31T06:17:00.001-07:00

Microprocessor programming

A program is a sequence of instructions that operate on data to produce desired results. A microprocessor needs to be programmed before it can perform a useful task. For example- comparing two numbers and printing out the greater of the two.

The program written to perform a particular task is stored in the semiconductor memory accessible to the microprocessor. The processor, having been instructed to execute the program, fetches one instruction at a time from the memory and executes it.

Instructions- an instruction essentially consists of and operation code, abbreviated as opcode, and the address (es) of the data on which it has to operate. The data on which and instruction operates, is also known as the operand(s) for that instruction. Most instructions specify directly the address of only one of the operands, the address of the other operand being implicitly known. Some instructions specify the data itself and not the address.

microprocessor definition

2009-07-31T06:16:00.001-07:00

What is microprocessor?

A microprocessor is an electronic device which is interfaced with memories and several other input and output devices. Thus, a study of microprocessors implies a study of a variety of memory chips, input/output devices, and techniques for interfacing them to the microprocessor.

Like any other digital computer, a system designed around a microprocessor needs to be programmed. Thus, a sequence of instructions needs to be formulated and input to the microprocessor-based system for effective operation. A sequence of instructions designed to perform a particular task is known as a program. A set of programs written for a microprocessor based system is known as the software for that system. Both hardware and software design are of paramount importance in microprocessor-based system design.

Microprocessor is just like any other electronic chip. It is more powerful than just any other chip. A µp is a device that:

· Has a limited set of on-chip memory locations, known as registers,, to hold information,

· Can understand a fixed set off basic commands, and

· Can generate signals to control external devices.

Inside the chip, there is an arithmetic logic unit (ALU). The ALU executes all arithmetic and logic instructions. For example, the arithmetic addition and logical AND operations will be performed by the ALU.

The registers inside the µp hold data on which the operations are performed. The control unit generates the external control signals and also controls the operation of the internal on-chip circuitry. The on-chip memory, in the form of registers, is generally very limited. Thus, almost every µp based system has an off-chip memory also.

The set of basic commands that a µp can understand, is known as the instruction set of the µp.

A µp does not have enough memory for program and data storage, neither does it has any input and output devices. Thus, when a µp is used to design a system, several other chips are also used to make up a complete system.

The first microprocessor was introduced in 1971 by Intel Corporation.

Knowledge management

2009-07-31T06:14:00.000-07:00

What is knowledge?

Knowledge is a fluid mix of framed experience, values, contextual information, expert insight, and intuition that provides and environment and framework for evaluating and incorporating new experiences and information. It originates in individual minds but is often embedded in organizational routines, processes, practices, systems, software, and norms.

Knowledge management enables the creation, distribution, and exploitation of knowledge to create and retain greater value from core business competencies. Knowledge management addresses business problems particular to your business- whether it is creating and delivering innovative products or services; managing and enhancing relationships with customers, partners, and suppliers; or improving work processes. The primary goal of knowledge management in a business context is to facilitate opportunistic application of fragmented knowledge through integration.

Data analysis

2009-06-30T05:47:00.000-07:00

Definition
Data analysis means the process of gathering, processing and modelling data.Mainly, data is hilighted and take out the useful information.It has different meanings under different catagories, such as science business and social science.It has multiple facets and approaches.

Data mining is the one method of data analysis in computing world.This is done by the method of knowledge discovery and predictive data technique.Predictive analytics focus on application of statistical or structural models for predictive forecasting or classification.

Technology

2009-06-18T04:28:00.000-07:00

Definition and Usage

In general technology is the relationship that society has with its tools and crafts, and to what extent society can control its environment. The dictionary offers a definition of the term: "the practical application of knowledge especially in a particular area" and "a capability given by the practical application of knowledge". In her 1989 "Real World of Technology" lecture, gave another definition of the concept; it is "practice, the way we do things around here". The term is often used to imply a specific field of technology, or to refer to high technology or just customer electronics, rather than technology as a whole. Technology in two ways: as "the pursuit of life by means other than life", and as "organized inorganic matter."

Technology can be most broadly defined as the entities, both material and immaterial, created by the application of mental and physical effort in order to achieve some value. In this usage, technology refers to tools and machines that may be used to solve real-world problems. It is a far-reaching term that may include simple tools, such as a wooden , or more complex machines, such as a space station or particle accelerator. Tools and machines need not be material; virtual technology, such as computer software and business method, fall under this definition of technology.

The word "technology" can also be used to refer to a collection of techniques. In this context, it is the current state of humanity's knowledge of how to combine resources to produce desired products, to solve problems, fulfill needs, or satisfy wants; it includes technical methods, skills, processes, techniques, tools and raw materials. When combined with another term, such as "medical technology" or "space technology", it refers to the state of the respective field's knowledge and tools. "State-of-the-art technology" refers to the high technology available to humanity in any field.

Technology can be viewed as an activity that forms or changes culture. Additionally, technology is the application of math, science, and the arts for the benefit of life as it is known. A modern example is the rise of communication technology, which has lessened barriers to human interaction and, as a result, has helped spawn new subcultures; the rise of cyberculture has, at its basis, the development of the Internet and the computer.Not all technology enhances culture in a creative way; technology can also help facilitate political oppression and war via tools such as guns. As a cultural activity, technology predates both science and engineering, each of which formalize some aspects of technological endeavor.

Stop Smoking Without Gaining Weight - Top Tips to Staying Fit When You Quit

2009-06-17T04:59:00.000-07:00

Nearly every smoker has been there. We all want to quit, but we are afraid of what will happen when we do. There is no doubt that you have heard stories of people who have quit smoking just to gain a lot of weight. It is hard enough to kick the habit as it is, and we all want to know if it is possible to stop smoking without gaining weight.
In my experiences it definitely is. But you have to apply yourself.

To successfully quit smoking you need to replace smoking with other activities or items. To many people that means they will rely on food or candy to kick the craving. That is exactly what you will want to avoid if you wish to stop smoking without gaining weight.

One thing you can do to stop the weight gain is to replace some of your smoking time with exercise. Instead of lighting up you could take the dog for a walk, go for a swim, or play some basketball. The key is to stay active.
Activity is the key to successfully quit smoking, and the best weapon you have to stopping weight gain.

If you decide to use a nicotine patch to help you break the physical addiction to smoking, you need to make sure that your brand will hold up with exercise. One of the biggest problems people face with the patch is sweat. Sweat can break the bond between the adhesive and your skin causing the patch to fall off. These patches are not cheap, so you need to make sure that they will hold.

Kicking the habit does not have to be hard. There is a method that will help you quit without expensive nicotine replacement treatments that are proven to not be much more effective that stopping cold turkey. It will give you the power you need to overcome your addiction and live a life free of cigarettes and smoke.

The Internet As a Medium of Communication and Commerce

2009-06-17T04:57:00.000-07:00

Services and resources available on the internet are expending phenomenally and are receiving global acceptance day by day. Amateurs and professionals alike look towards e-resources to be updated about latest developments in their fields and acquire an edge over others by staying informed and develop new sets of skills. One such rapidly growing online service is of web-based business. Over the last two decades, the internet has become both an inevitable repository of information and a mode of communication. The advantages the internet offers are not relegated to only the mainstream ideas but there are also fringe ideas that flourish on web. It is an undeniable fact that computers and the internet have drastically altered the way the people view and interact with the world. While information technology has become a catalyst for revolutionizing communication, education, entertainment, commerce and many other spheres of human activity, there is a dire need to bring about substantial changes at the grass root level in order to fully capitalize on advantages of the information age and more specifically utilizing the diversified opportunities of web related businesses. After centuries of dealing with issues such as suppression of freedom, conflict between ideologies the internet has finally provided a space for free discussion and collective thinking without restriction. This in fact is proving as a potential step towards the rapid growth and popularity of web based business as well. This digital domain holds the promise of eliminating barriers of distances and finally leads the human race to a common platform.

Today the process of digital evolution continues. The highest volume of traffic that passes across the internet is through the e-commerce related and web based business networks. One indicator of the tremendous popular acceptance of such web sites and opportunities is their accessibility all across the globe. The great features of online business, and perhaps one of its greatest advantages is its immediacy. Products and items along with their details are provided using this unique method of online web sites. There is as such no time lag, not much waiting or standing in long queues and availability of vast range of products is making online business opportunities more convenient. The internet phenomenon has had a transformational effect on society. It has opened a new medium of communication for individuals and businesses and provides vistas of opportunities to do things in an entirely different way. This internet growth initially spurred on by the private sector interests has now been embraced by governments who are positioning themselves to become part of this revolution as well.

Balancing the pros and the cons of online business, it can easily be said that the future lies with this form of business. Although the challenges and security risks confronting the online business are quite evident, they are easily outnumbered by its benefits and advantages, not only for the business-oriented people but also for all users. At the end of the day, it is after all, the use of facility that eventually determines its worth.

Information Security

2009-06-14T05:11:00.000-07:00

INFORMATION SECURITY

Definition:

Information security refers to protecting information and information systems from unauthorized access, use, disclosure, disruption, modification, or destruction. The goals of information security include protecting the confidentiality, integrity and availability of information.

All organizations, including governments, military, financial institutions, hospitals, and private businesses, gather and store a great deal of confidential information about their employees, customers, products, research, and financial operations. Most of this information is collected, processed and stored on electronically and transmitted across networks to other computers. Protecting confidential information is a business requirement, and in many cases also an ethical and legal requirement. For the individual, information security has a significant effect on privacy and identity theft.
The field of information security has grown significantly in recent years. There are many areas for specialization including Information Systems Auditing, Business Continuity Planning and Digital Forensics Science, for example. There are also specific information security technical certifications that can assist getting started in this field.
More information about Information Security and the Information Technology industry can be found here:
Information Security Certifications
Information Security Associations
All About Information Technology
Information Technology Publications
Also Known As: computer security, information assurance

2009-06-14T05:04:00.000-07:00

Computer Networking Information:

Computer Networking:

Computer Networking is a focus within engineering that deals with communication between computer systems or devices. Computer networking is often considered a sub-discipline of a few areas: telecommunications, computer science, information technology and/or computer engineering. Computer networks rely heavily on the theoretical and practical application of each of these engineering disciplines.
A computer network is any set of computers or devices connected to each other with the ability to exchange data. Examples of different networks are:
1) LAN
2) MAN
3) Wireless LANs (WLAN)
4) Wireless WANs

DBMS

2009-06-14T05:00:00.000-07:00

Definition:

A database is a collection of records or data that is stored in a computer system. The structure of a database is dependent on how the data is organized, according to a particular database model. Today we commonly use a relational database model. Other models include a hierarchical model and the network model.

A computer database relies on software to organize the data and how it is stored and retrieved. The type of software used for this is called a database management system (DBMS).

Database management systems are categorized according to the database model that they support. The model, in turn, determines the query languages that are available to access the database. This determined how the data is retrieved, manipulated and then used to make business decisions. Other important issues that a DBMS addresses include managing performance, concurrency, integrity, and recovery from hardware failures.

Information Technology

2009-06-14T04:53:00.000-07:00

We use the term information technology or IT to refer to an entire industry. In actuality, information technology is the use of computers and software to manage information. In some companies, this is referred to as Management Information Services (or MIS) or simply as Information Services (or IS). The information technology department of a large company would be responsible for storing information, protecting information, processing the information, transmitting the information as necessary, and later.

History of Information Technology:

In relative terms, it wasn't long ago that the Information Technology department might have consisted of a single Computer Operator, who might be storing data on magnetic tape, and then putting it in a box down in the basement somewhere. The history of information technology is fascinating! Check out these history of information technology resources for information on everything from the history of IT to electronics inventions and even the top 10 IT bugs.