Computer System – Introduction

What is a Computer System ? A Computer system includes the computer along with software and hardware that are necessary to operate a computer. The word computer comes from the word “compute” which means to calculate. A computer may be defined as an electronic device, which can store and manipulate data and provide result according to instructions fed by the user. […]

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Hardware,Software & Storage devices

  Hardware  Hardware refers to all devices that are physically connected to a computer i.e. something that can be physically touched. Without any hardware, software would have nothing to run on. Hardware is the physical part of a computer which includes the digital circuitry as distinguished from the computer software that only executes within the hardware. It starts functioning once […]

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Introduction to Information System – Components & Types

What is Information System (IS) ? An information system can be defined as a set of interrelated components that collect (or retrieve), process, store, and distribute information to support decision making and control in an organization. In addition to supporting decision making, coordination, and control, information systems may also help managers and workers analyse problems, visualize complex subjects, and create […]

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M commerce – Meaning, Applications and Advantages

M Commerce can be defined as any electronic commerce activity conducted over a wireless network through mobile devices. It includes activities such as buying and selling of goods, provision of services and information, online transactions etc. Wireless networks like GSM, CDMA, TDMA, GPRS and UMTS enables a user of a mobile device to access a variety of information stored on […]

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Firewall & Types of Firewall

A Firewall may be simply defined as a single point between two or more networks where all traffic must pass, the firewall authenticates, controls and logs all the traffic.  In the computing world Firewall is a software or hardware based network security system that controls incoming and outgoing network traffic by analysing data packets and determining whether they should be […]

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Transaction Security- Security Issues in E commerce & Defensive Measures

In order to successfully manage an e commerce portal it is essential to understand about Transaction security and security issues in e commerce. Transaction Security An online transaction requires a consumer to disclose sensitive information to the vendor in order to make a purchase, placing him-self at significant risk.  Transaction Security is concerned with providing privacy in transactions to the […]

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Internet, Intranet & Extranet

What is Internet ? Internet is a global system of interconnected computer networks that use standard internet protocol suite to kink several devices worldwide. It is an international network of networks, linked by optical, wireless and electronic networking technologies which consists of business, public, educational and government networks. It carries an extensive range of information, resources and services. It utilises […]

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