The Tech Storror

Electronic commerce (E-commerce) Web based information system: An important component of modern computer based information system is web based information system. An information system based on the Internet is called a web-based information system. That is, when a user can use an information system through the Internet and the World Wide Web, that information system is called a web-based information system. A user of an information system on the Internet is called an Internet client. In this case, the client can use this information system from anywhere in the world by being connected to the Internet. Web based database is used in this system. When an Internet client sends an information request, the Web server verifies the client's right to receive the information in response to the request and sends the requested information to the client if it is a valid client. With the help of web based information system, the data of an organization can be collected, stored, presented, modern...

Network Sharing and Security Network Sharing: Network sharing is a feature that allows sharing of resources over a network, such as files, documents, folders, media, etc. It is made accessible to other user computers on networks. Network sharing enables data to be accessed across multiple devices or at the same time. By connecting a device to a network, other user devices on the network can share and exchange information through the network. File Sharing: File sharing is the practice of distributing or providing access to digital media, such as computer programs, multimedia (audio, images, and video), documents, or e-books. File sharing can be saved in different ways. Common methods of storage, transmission, and dissemination are manual sharing uses such as removable media, centralized computer servers, web-based hyperlinked documents, and distributed peer-to-peer networking. Network Sharing in Windows Operating System: Windows 7 and Windows 8x have the same network sharing settings...

Client-server network Usually when we receive any data, the computer from which we receive the data or service is called server. We are clients or consumers because we serve from it. In this network, both workstation and server computers have the opportunity to work autonomously with their own CPU and memory. It consists of a graphical user interface or front end program on the client workstation and other facilities. It stores the back end server programs of one or more servers. In other words, a suitable network for centrally storing data, ensuring security, running various applications and running the network is a client-server network. In this network, one computer owns the resource, and other computers in the network use those resources. The computer that shares the resource is the server, and the computers that share the resource are the clients. All the resources of the network are stored on the server so the resources can be managed from the center. Security is ensured as all u...

Malicious computer drivers Describe the malicious computer controllers: Various effects and causes work for computer damage. Some of these effects are natural, some are artificial and some are due to user inefficiency and carelessness. Besides, some negative actions intended by other users can damage the computer. Computer malware controllers can be broadly divided into four categories: (a) Physical damage controls (b) Malfunctioning controllers due to electrical problems (c) Software Malicious Controls (d) Improper Handling of Users. (a) Physical Harmful Controllers: Those harmful controllers that occur due to external conditions and environmental factors causing damage to the computer are called Physical Harmful Controllers. called physical damage control. The names of such controllers are: (i) Dust (ii) Smoke (iii) High Temperature (iv) Very Low Temperature (v) Magnetic Fields (vi) Liquid & Humidity (vii) Corrosion to Parts (viii) Noise or Interference. (b) Faulty currents due t...

Organization of Program A set of instructions used by a computer to solve a problem is called a program. These instructions are generally divided into three parts, namely, input, processing and output. That is, how many instructions are used for inputting data, how many instructions are used for processing and how many instructions are used for displaying output. The relationship between these instructions is shown below in the diagram: Instructions to input ↓ Instructions for data processing ↓ command to provide output Program development steps : There are several sequential steps to be followed in the process of writing a program and executing it on a computer to perform various tasks. Each step is discussed in detail below: (1) Investigation (2) Problem analysis (Problem analysis) (3) Program design (4) Program coding (Program coding) (5) Program testing, debugging and implementation (Program testing, debugging and implementation) (6) Program maintenance  1. Finding information:...

Cloud Computing  Using different computing resources, such as hardware and software, through a computer network system is called cloud computing. The method used to access some global facilities by connecting to the Internet is called cloud computing. Through this, the remote user gets the data, software and results of the processing through the computer. Cloud computing services started in 2005. Amazon.com's Elastic Compute Cloud (EC2) was the first to offer this service. Although the concept of cloud computing is not new. The concept of central computing was introduced in the sixties. According to that idea, big companies plan to install a mega computer in every city. City dwellers will receive computer services through lines like electric or dish lines. The project did not materialize due to network speed limitations. The concept of grid computing in the 1990s is also basically a concept of cloud computing. At present, famous companies like IBM, Microsoft, Google etc. are provid...

Network Devices Modem :  The modem consists of Modulator Mo and Demodulator Dem Voice is an important and widely used electronic device used in computer communication systems. The computer is connected to the telephone line through a modem. As a result, it is possible to send data from a computer to any part of the world through a modem and phone line. In this case, the receiving computer must also be connected to the phone line through a modem.  The modem's function is to convert a digital signal to an analogue or modulate and Digitalize or demodulate analogue signals. Analogue signals can flow through normal telephone lines, but computers use digital signals. Therefore, the digital signal provided by the computer has to be converted into an analogue signal to be sent over the telephone line. And the work of converting this digital signal into an analogue signal is done by the modem connected to the sending computer. The modem sends the converted signal to the receiver over t...

 | Digital Divide The development of information and communication technology has divided people around the world into two groups in terms of the convenience of its use. One group is benefiting from the use of modern information and communication technology and the other group is not. The digital divide exists between people around the world, and even within a country. The digital divide is associated with the use of other devices such as telephones, televisions, and cellular phones. The world is becoming computerized very fast, and those who have access to computerized equipment are getting ahead. Those who don't get it are left behind. That is, the gap between those who are computer literate and those who are not is known as the digital divide. Causes of the increasing digital divide: In the last ten years, significant improvements have been made through the Internet. Today there are over 1 billion websites on the internet and billions of users are using the internet. As informa...

Genetic Engineering The process by which the acquired knowledge of heredity is used for human welfare is basically called genetic engineering. Genetic engineering is a process in which parts of DNA or RNA that protect the offspring are removed or inserted into cells. Sometimes it is also called genetic modification. It is a branch of biochemistry in which life is defined at the molecular level. The journey of genetic engineering began with the discovery of recombinant DNA technology by Paul Berg in 1972. The term "genetic engineering" was first used in 1951 by Jack Williamson in his science fiction novel Dragon's Island. A year before that, Alfred Hershey and Martha Chase confirmed that DNA is the carrier of heredity. Some other branches of biotechnology like microbiology, biochemistry, biostatistics, tissue culture like genetic engineering is also a branch. Genetic engineering involves removing DNA carrying a specific gene from an organism and transferring it to a differ...

Computer Crime Many businesses are now so dependent on the data stored in their computer systems that if the data is lost or damaged, it becomes difficult to operate normally. Data is usually damaged or lost due to human error. Sometimes data is intentionally damaged or stolen. It is important to take steps to protect against data theft, loss or damage. They must be sure that if this happens they will get their data back. The proliferation of Information Communications Technology or ICT is increasing the misuse of stored data. Data stored in computers is often easier to misuse than paper-based systems. (i) Can be changed without leaving the route. (ii) Large amounts of data can be stored and searched quickly. (iii) Data can be transferred instantly using e-mail and internet. (vi) Programs may be designed to damage computer systems. (vi) the program may be designed to damage computer systems; Examples of such programs are viruses and logic bombs.  (iv) Hacker can attack the communic...

Mobile Internet Currently, mobile phone companies are providing Internet services to mobile phones with the help of GPRS and EDGE technology. In this case, Wireless Application Protocol (WAP) technology is used, where no carol and modem are required, very easily from any part with the help of mobile phone internet - mail exchange, internet banking, e-comy searching for important information, shares in capital market. Important information regarding shopping, admission to educational institutions and any breaking news is known. Advantages of using internet on mobile phones: (i) Exchange of essential information easily with the help of internet from anywhere within mobile network coverage. (ii) The cost of using the Internet is relatively low. (iii) No hassle of connecting cables and modems. (v) All the facilities of internet are available on mobile phones. Such as e-commerce, online banking, medical services, searching for important information, selling shares, searching for important i...

Decision support and executive support systems Decision Support System-DSS: Decision support is a comprehensive computer-based information system, which helps management in decision-making. Such systems collect various business data and generate reports, which help in future decision making. Data is collected in transaction processing systems, reports are prepared using data stored in management information systems, and decision support systems analyze the status of reports to assist in decision making. DSS can be used by middle managers as well as top managers. DSS helps managers to make semi-structured, unique or rapidly changing decisions. It is used on a daily basis by the shipping manager to execute a variety of contracts. Features of Decision Support System: (i) Decision support systems use sophisticated analysis and modeling tools. (ii) DSS helps the manager in taking semi-structured, unique or rapidly changing decisions. (iii) DSS is used by middle and top level managers. (v) ...

Clasification of computer network Computer communication, information sharing, electronic mail, electronic libraries, bulletin boards, etc. using computer networks are increasing in prevalence and spread. As a result, different types of networks are used in different countries of the world today. That is why the computer networks used in the world are classified from different points of view: namely-- (a) Classification of Networks by Ownership : (i) Private Networks and (ii) Public network. (b) Computer network according to type of work According to the type of work computer network can be mainly divided into three parts. These are- (i) Peer-to-peer network (ii) Client-server network (iii) Hybrid network (c) Classification of networks according to geographical extent : (i) Personal Area Network (PAN) (ii) Local Area Network (Local Area Network-LAN) (iii) Metropolitan Area Network (MAN) (iv) Wide Area Network (Wide Area Network-WAN) In general, network segmentation refers to the classi...

 Internet The Internet is the dominant medium in the computer networking process of today's world. Thanks to the Internet, all the computer users of the entire world have been able to be bound in the same circle. As a result, mutual cooperation, solidarity, etc. have increased unexpectedly. So some call the Internet a network of networks. However, it can be said that the Internet is the dominant force in all computer networking in the current world. The “Internet” is dominating the field by bringing the vast empire of the computer world into its hands. Thanks to the Internet, the communication system has been greatly improved. People can get news from different parts of the world in a short time and at a low cost. You can send the necessary information to the nearest person in any part of the world in a moment. Milestones of internet speed. It plays an immense role in today's communication system and information exchange. NET family members will find solutions to most of their ...

Hotspot, Wi-Fi, Wi-Max, Bluetooth Hotspot: Hotspot is a type of wireless network that provides internet connection to mobile computers and devices such as smartphones, PDAs, tablets, netbooks, notebooks or laptops. Currently, the three popular hotspot technologies are – 1. Wi-Fi 2. Wi-Max 3. Bluetooth Wi-Fi: Wi-Fi or wireless fidelity is a popular wireless technology that uses radio waves to connect any electronic device to a high-speed Internet connection or computer network to exchange data. It is technically known as IEEE 802.11b. Wi-Fi technology is relatively faster (11 Mbps) and less expensive than standard Ethernet and other common wired LAN technologies. Thus, the Wi-Fi wireless LAN connects laptop PCs, PDAs, smart phones, tabs and other devices with Wi-Fi modems to the rapidly growing business, public and the planet to easily connect to the Internet and other networks. A faster version (802.11g) with a speed of 54 Mbps promises widespread use of this technology. Features of Wi...

Types of mobile or cellular sets  Mobile phone service providers are offering various services to the customers. Due to different uses of mobile phones, nowadays people are using different types of mobile phone sets. Based on the structural aspects and multipurpose use of the mobile phone, mobile or cellular phone sets can be divided into several categories. namely -- (i) Basic Mobile Phones (ii) Camera mobile phones (iii) Music or MP-3/MP-4 mobile phones (iv) Video mobile phones (v) Smart mobile phone (vi) PDA or Note mobile phone Types of mobile phone technology: The current mobile phone technology can be mainly divided into two categories, namely--  (i) GSM = Global System for Mobile Communication, technology and (ii) CDMA (CDMA Code Division Multiple Access) technology.   GSM  It was first named Group Special Mobile (GSM) in 1982, then the definition of the name was changed to Global System for Mobile Communication (GSM). The third generation version of GSM techn...

Mobile telephone system A system designed to exchange data and information between two mobile devices or one mobile and one fixed device is called a mobile telephone system. The mobile device is called Mobile Station (Mobile Station or MS) or Mobile Unit or Mobile Set and the fixed device is called Land Unit. A mobile service provider divides its coverage area into smaller segments. Each division is called a cell. From this cell another name of mobile phone has been given as cellular phone. A cell consists of an antenna and a small office, the small office with the antenna is called a base station. Each base station is controlled by a mobile switching center from where call connection, call information recording, billing system are controlled in a computerized manner. Cell size usually depends on population density. Cell sizes can typically range from 1 mile to 12 miles. Cellular phones are now also known as mobile phones. Nowadays, data such as audio, video, image, text etc. can be ex...

Electronic commerce or e-commerce The full name of E-Commerce is Electronic Commerce. Electronic commerce refers to the online process of exchanging business information, maintaining relationships between sellers and buyers, producing goods or services, marketing, selling, delivering, servicing and paying prices using the Internet. In today's internet age, e-commerce does not mean only buying and selling of goods online or on the internet. On-line product and service delivery excellence, on-line processing development, marketing management expansion and dissemination, global internet e-commerce community formation implies. Use of electronic commerce: E-commerce requires the use of information technology, telecommunication systems and internet technology. Important uses of e-karmas are-- (i) E-commercemust ensure accurate information, marketing, transaction execution and secure payment settlement procedures for the buyer. (ii) Trade and business partnerships rely on the Internet and...