The Tech Storror

Outsourcing Computer Outsourcing: The word outsourcing information freelancing basically means free profession. That is, a profession to earn income by working freely. And a little more simply. In other words, different organizations do different types of work through the Internet system. By someone else outside your organization. Outsourcing is called outsourcing. Those who do outsourcing work are called freelancers. Jobs in multimedia, outsourcing sites or online marketplaces are divided into different categories, such as web development, software. Development, networking and information systems, writing and translation, administrative support, design and customer service, sales and marketing business services, etc. It is possible to earn online only if all these tasks are done through the internet system. There are also many other types of work available in the outsourcing world. . Freelancing Freelancing  means working independently without being under a specific person or orga...

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...

 Hybrid network A mixed or hybrid network is essentially a combination of client-server and peer-to-peer networks. Generally, the client-server portion dominates in a hybrid network. However, in addition, there are sparsely coupled peer-to-peer network segments. Advantages of a hybrid network are: (i) Client-server applications can be housed and managed centrally. (ii) Users can control access to their respective computer resources and share their resources. Disadvantages of hybrid network are- (i) Having two types of networks makes it difficult for users to access the network. (ii) Need to remember different passwords for workgroups and servers/domains. (iii) Resources are located on different computers and cannot be managed centrally. Different versions of the same file can be scattered across different computers. (iv) Difficulty backing up files stored on different workstations. Network architecture Designing and implementing an effective network with respect to communication ru...

Software maintenance tools Software maintenance tools and system tools used in Windows operating system for software maintenance are backup, character map, disk clean-up, disk defragmentation, file and setting transfer wizard, schedule task, security center, system information and system restore. Below are descriptions of three commonly used tools (Disk Clean-up, Scan Disk or Check Disk, and Disk Defragmentation): (a) Disk clean-up: Many unnecessary files accumulate in the computer system at various times, such as temporary files, files downloaded from the Internet, files stored in Recycle Bin. All these files occupy the memory or space of the computer system. All these unnecessary file systems can be deleted using disk clean-up tool. The following unnecessary files can be deleted using disk clean-up tool. * Temporary Internet files * Downloaded program files * Deposit file in recycle bin * Temporary files (b) Scan Disk: If there is any error in the saved file, it can be corrected us...

Analog Electronics (i) The branch of electronics technology that analyzes and discusses the design, construction, operational use, advantages, disadvantages, etc. of analogue signals and various circuits and devices operated by analogue signals is called analogue electronics. The branch of electronics technology that deals with digital signals, numbers and the design, construction, operation, use, advantages and disadvantages of various circuits and devices operated by digital signals. Various topics are analyzed and discussed, called digital electronics. (ii) Analog electronics systems use ever-changing electrical signals. Digital electronics systems have two defined levels of signals. (iii) Analog electronics are difficult to diagnose due to variations in signal. Since there are only two layers in the digital electronics system, fault diagnosis is easy. (vi) Signal processing circuit components are quite expensive in analogue electronics systems. Circuits used for signals in digital ...

Basic concepts of operating system The main purpose of the operating system is to-- • Creation of working environment: The operating system that creates a better working environment, the better and improved the operating system. • Coordinator: It coordinates between hardware and software. It acts as a coordinator between user tasks and all devices. • Automatic management: When a problem arises, it automatically understands what to do. If the appropriate solution is not provided, the operating system may automatically shut down the computer by itself. • Control of computer operations: The objective of the operating system is to control the speed of input/output operations by programs. • Memory management: helps the computer to work faster in stages by storing different files so that they can be found easily. this • Working based on priority: All the tasks that are directed to the computer are carried out based on priority. • Input/Output Management (I/O Management): It is the task o...

Describe the different types of computer memory Memory is the place to hold memories or information. Information can be stored here. Memory is mainly of two types, (a) Main memory/Primary memory (b) Auxiliary memory/Secondary memory Main memory is again of two types, namely-- (i) RAM or Random Access Memory (ii) ROM or Read-only memory (ROM or Read-only memory). 1. Main memory/ Primary memory: The memory with which ALU has a direct connection is called the main memory. The main memory also needs to be very fast as it is directly connected to the ALU and capable of very fast calculations. All the information and instructions that are always needed are kept in the main memory. In addition, the necessary data and instructions for the calculations performed by the ALU are fetched from the auxiliary memory and temporarily stored in the main memory. After the calculation is finished they are moved back to the auxiliary memory. Main memory is of three types namely--  (a) Internal, (b) Ex...

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...

Concept of data communication system: Data transfer between a central computer and remote terminals was first introduced in the 1960s. These terminals lacked storage and processing capabilities. Such a method is known as teleprocessing. The terminal of this method is called the silent or dumb terminal. Later, processing and data storage and data storage capabilities were created in these terminals, known as self-contained systems. Data is a precious resource in today's era. Information or data plays an important role in the improvement of an organization, making realistic decisions for the organization, connecting the internal environment of the organization with the rapidly changing world outside, etc. The special method by which data is exchanged from one computer to another or more computers is called the data communication method. The advantage of this method is that data can be transmitted quickly and accurately. The main five components or parts of data communication are— 1. ...

Types of mobile memory cards: 1. SDSC ➤ Security Digital Standard Capacity 2. SDHC ➤ Standard Digital High Capacity  3. SDXC ➤ Standard Digital Extended Capacity  4. SDUC ➤ Standard Digital Universal Capacity   Many memories are written like (2), (3), (4). This means how fast it can perform copy and paste operations when this memory is connected to a computer.

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...

 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...

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...