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Operating System

What is an Operating System? An Operating System is software that acts as an interface between computer hardware and the user. Operating System is like a Working Framework of the computer. Every computer system must have at least one operating system to run other programs or applications. The Operating System helps you to communicate with the computer without knowing the computer’s language. It is not possible for the user to use any computer or mobile device without having an operating system. Types of Operating System Batch Operating System Multitasking/Time Sharing Operating System Multiprocessing Operating System Real Time Operating System Distributed Operating System Network Operating System Mobile Operating System Batch Operating System Some computer processes are very lengthy and time-consuming. To speed the same process, a job with a similar type of needs are batched together and run as a group.
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Database

File-Based Approach File-based approach is the preliminary approach to data storage. It is based on relatively simple data structures, such as the Indexed Sequential Access Method, and is usually implemented for a single application. Files are generally created on an as needed basis to service the data needs of an application. The files are associated with an application. A file-based data storage approach makes it difficult for other applications to access data not owned by their application. Because the physical storage characteristics of the same data may be different for different applications, therefore data owned by one application may be stored in a format not consistent with the retrieval capabilities of another application. This causes inconsistency while updating data files across the organization. The primary reason it is that the File-based approaches to data storage are tied to applications rather than the entities/ objects to which the f
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Java

What is Java? Java is a software platform and computer programming language. Java is commonly used to refer to the Java platform, a set of tools allowing for easy cross-platform application development, as well as the Java programming language, which is a general-purpose programming language often used to develop programs for this platform. Code written in Java can be run on any system that a Java virtual machine (JVM) can run on. This concept of write once, run anywhere was used as a slogan to promote Java’s cross-platform abilities. Java environments can be found on all sorts of devices, large and small. Be careful not to confuse Java with JavaScript. While both languages are now found in numerous environments, JavaScript, which is most commonly used to power interactivity inside of a web browser, is a different tool completely. Other than a part of the name, the two don’t share much in common. Other Tutorials HTML Tutorials Java
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Computer

What Is Computer? Computer is an electronic device that is designed to work with Information. The term computer is derived from the Latin term ‘computare’, this means to calculate or programmable machine. Computer cannot do anything without a Program. It represents the decimal numbers through a string of binary digits. The Word 'Computer' usually refers to the Center Processor Unit plus Internal memory. Digital Computer Definition The basic components of a modern digital computer are: Input Device, Output Device, Central Processor Unit (CPU), mass storage device and memory. A Typical modern computer uses LSI Chips. Four Functions about computer are: accepts data Input processes data Processing produces output Output stores results Storage Input (Data): Input is the raw information entered into a computer from the input devices. It is the collection of letters, numbers, images
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E-Commerce

What is E-Commerce? E-Commerce or Electronics Commerce is a methodology of modern business which addresses the need of business organizations, vendors and customers to reduce cost and improve the quality of goods and services while increasing the speed of delivery.E-commerce refers to paperless exchange of business information using following ways Electronic Data Exchange (EDI) Electronic Mail (e-mail) Electronic Bulletin Boards Electronic Fund Transfer (EFT) Other Network-based technologies With e-commerce you can buy almost anything you wish for without actually touching the product physically and inquiring the salesman n number of times before placing the final order. Features of E –Commerce E-Commerce provides following features Non-Cash Payment: E-Commerce enables use of credit cards, debit cards, smart cards, electronic fund transfer via bank's website and other modes of electronics payment. 24x7 Service availability: E-
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Mobile Computing

What is Mobile Computing(MC)? It is the process of computation on a mobile device. A set of distributed computing systems participate, connect, and synchronize through mobile communication protocols. Mobile computing offers mobility with computing power. A mobile device does not restrict itself to just one application such as voice communication. Mobile computing facilitates a large number of applications on a single device. Ubiquitous computing: It means the information is available anywhere, all the time. Ubiquitous computing is based on pervasive computing. Pervasive means existing in “all parts of a place or thing”. Pervasive computing devices are not PCs. These are handheld, very tiny, or even invisible devices which are either mobile or embedded in almost any type of object. Mobile computing is also called pervasive computing when a set of computing devices, or networks have the characteristics of: Transparency: means witho
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Cloud Computing

What is Cloud Computing? Cloud computing is a model for enabling ubiquitous, convenient, on-demand network access to a shared pool of configurable computing resources (example: networks, servers, storage, applications, and services) that can be rapidly provisioned and released with minimal management effort or service provider interaction. In other words Cloud computing is on-demand access, via the internet, to computing resources, applications, servers (physical servers and virtual servers), data storage, development tools, networking capabilities, and more hosted at a remote data center managed by a cloud services provider. Cloud Computing is on demand delivery of compute power database storage applications and other IT services through a cloud services platform via the internet with pay-as-you-go pricing Cloud Computing provides developers and IT departments with the ability to focus on what matters most and av
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Information System

What is Information System? An information system (IS) can be any organized combination of people, hardware, software, communications networks, data resources, and policies and procedures that stores, retrieves, transforms, and disseminates information in an organization. Examples of Information Systems Smoke signals for communication were used as early as recorded history and can account for the human discovery of fire. Card catalogs in a library are designed to store data about the books in an organized manner that allows readers to locate a particular book by its title, author name, subject, or a variety of other approaches. The Fundamental Roles of IS in Business Support of business processes and operations. Support of decision making by employees and managers. Support of strategies for competitive advantage. Other Tutorials HTML Tutorials Java Tutorials RDBMS Tutorials Other Popular Posts HTML Informa
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HTML

What is HTML? HTML stands for Hyper Text Markup Language. HTML is not a programming language. HTML is a standard markup language. HTML is basic building block of web. HTML is a language used for describing web pages and creating websites. Other Tutorials HTML Tutorials Java Tutorials RDBMS Tutorials Other Popular Posts HTML Information System Cloud Computing Mobile Computing E-Commerce Computer Java Databse Operating System
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