The Tech Storror

Information Systems An information system is a system consisting of people and machines, which process data and makes it useful for users. That is, an information system is an integrated system of human resources, hardware, software, communication network and data resources, which collect, store, present, modernize and exchange and process information from one organization to another organization. The use of computers has made data processing much easier, error-free and faster, and the distribution of information between different users or organizations has become much easier. Below are some more definitions of an information system: An information system is a combination of human resources, hardware, software, network systems and data resources that collect, transforms and process the information an organization needs. Technically, an information system is a set of interrelated components that collect, (or retrieve), process, store and distribute information to support organizational ...

Based on the interface, operating systems are divided into two categories, namely: (i) Text or character-based operating system (ii) Image-based operating system. Text or letter-based operating systems: In text-based operating systems, commands are executed by typing them in the command prompt according to their structure. Commands are written using letters, words, numbers, symbols, etc. To work in this system, the user needs to know the commands and syntax in advance and work by writing commands according to the syntax. Being color based this operating system is difficult and boring to work with. Commands have to be typed by keyboard only. A. Network, Internet system is not working. This system requires relatively little memory to operate, cannot run multiple programs simultaneously, supports only one user, and requires the use of a keyboard to move the cursor. No pictures, images or icons can be used in this command. Examples: MS-DOS, TOS, BOS, UNIX et cetera. Characteristics of tex...

Basic Concept of System A system is a group of interrelated components that work together to achieve a common goal. For example, a college is a system made up of principals, teachers, staff and students, the common purpose of which is education. A system can also have multiple objectives. However, the objectives of the system will take priority over the components of the system. The way any organization works is called a system. Systems are created to solve problems. The main three parts of the system are - data acquisition, processing and output. Things to know about any system- (i) What objectives the system will be designed to achieve? (ii) How the system will be organised. (iii) What are the components of the system and what are the interrelationships and dynamics between the components? (iv) how users will interact with the system; General characteristics of the system. All systems have some common features, viz (i) Organization (ii) Interdependence (iii) Interaction (iv) Consolid...

Data Searching Searching: Searching is the process of finding specific data from an array or file. Let's say an array contains the data 5, 3, 7. n is a data, which must be determined whether it is in this array or if it is in any position. Searching is the method by which this answer is derived. There are different methods of searching. The most commonly used methods are: (A) Linear Search  (B) Binary Search (A) Linear Searching or Sequential Sorting: In order to find specific data in the sequential searching method, starting the comparison from the first data of the array and comparing to the last data if necessary, the value of the specific data is found in the array or not. This method takes more searching time. Each data requires comparison. Searching takes less time when the specified data is located at the beginning of the array. The main advantage of this method is that there is no need to sort the primary data before searching. Sequential searching or linear searching algor...

Plagiarism Plagiarism is the act of stealing someone's work and publishing it under your own name. Plagiarism is the complete copying or partial modification of a person's literary, research or editorial work and published under one's own name. Copying even important phrases of a text falls into plagiarism. Plagiarism is an illegal act. Everyone should come forward to prevent this. Cyber ​​Plagiarism Cyber-plagiarism is the act of copying or downloading part or all of an article or research paper obtained from the Internet or using an idea obtained from the Web without mentioning the original source. Nowadays, cyber plagiarism is widely seen, which is completely illegal and illegal. Data Preservation Law: Information technology can be used to collect and store large amounts of data. Rapid processing turns data into valuable information, which can be transmitted and shared across ICT systems. Personal data: Data related to individual lifestyles can be transferred from one IC...

Computer Hacking  Using a computer by entering a computer network illegally or without permission, losing information, stealing information, distorting information or taking complete control of another's computer in a special way is called hacking. Those who do hacking are called hackers. That is, all activities of hackers are called hacking. Hacking can be legal or illegal. Those who hack illegally are called black hat hackers. Hackers use special software to attack different computers in the network. This particular type of software is called spyware. It is a software which is installed on the computer without the knowledge of the user. Software user information; For example by stealing passwords, e-mail numbers, credit card numbers etc. Among the criminal activities that are carried out through hacking, the notable activities are as follows-  (i) Accessing other's computer information with the help of spyware using the Internet. (ii) steal passwords by illegally monitoring ...

Logic bombs Logic bombs are instructions written in computer code, which Can be hidden in the software and activated at a specific date and time. Once activated, logic bombs begin to take control of the computer and damage or even delete data files. Criminals intimidate businesses into doing this and demand money from them.

Set-up or Apply Operating System Password: BIOS has various menus, under which there are many options. Changing these options is a BIOS set-up change. Applying Operating System Password:  Following steps are to be taken to enter password using bios. (i) Enter BIOS. (ii) Enter the security menu of bios. (iii) Go to Security Options and select System. (iv) Supervisor Password' Password to be entered. (v) Re-enter the said password. (vi) Enter the BIOS exit menu and save the password for activation. Remove password: Removal of System Password: To remove the system password the following steps are to be taken. namely-  (i) Enter BIOS.  (ii) BIOS Security 'Supervisor Password' password should be removed. (iii) Enter BIOS exit menu and save the change to take effect.

Rules for using computers in a healthy way  In order to use the computer healthily, the user's seating arrangement and various parts of the body should be kept in proper order. As a result, users can use the computer comfortably and the risk of diseases caused by excessive computer use will be reduced. The following health rules should be followed when using computers: (i) Healthy computer seating arrangement prevents eye pain, neck, back, waist and shoulder pain, hand, elbow and wrist pain. For example, the distance between the user's eyes and the monitor should be 50 cm to 60 cm. The height of the monitor should be such that the surface of the screen and the user's eyes are at the same level. Monitor brightness should be controlled to avoid harsh or unbearable light and computer room lighting should be adjusted to be tolerable or suitable for work. (ii) Working in the same asana for a long time may lead to muscle fatigue or fatigue. Therefore, even if the seating arrangem...

Safe Health  In our daily life, ELF (Extremely Low Frequency) radiation is not only emitted from electricity mains and computer monitors. ELF radiation is also emitted from other natural sources such as sunlight, fire, and the Earth's magnetic field. Currently, the number of studies on the effects of ELF radiation is increasing. Studies have shown that this can lead to a variety of health problems. How safe is it to use mobile phones and computers? A study in France has said that not only microwave radiation but also mobile phones and computers are harmful to health for various reasons. According to experts, excessive use of mobile phones and computers is a threat to health. Protection of hands and wrists: Some exercises should be done for hands and wrists. They are described below-- Hand Exercises: Just as athletes prepare themselves before playing, everyone should do some hand exercises before using the keyboard. There are different types of arm exercises. First massage the hands...

Rules of Disk Defragment--- Systems that point to the drive with the mouse and press the right button to get a pull-down menu. The Properties Selector dialogue box is available from the pull-down menu. The dialogue box will have various options like - General, Tools, Hardware, Sharing etc. Click on Toss to see options, Check Now, Defragment Now, Backup Now. (i) Check now Check disk. Click the Start button to start the disk scan. (ii) Click on the Backup Now button (ii) Defrag Now Click Defragment button to start disk defragment.

Analog System: An electrical signal that varies with time is called an analog signal. A system that uses analog signals is called an analog system. Electronic devices use analog signals to carry out their internal functions. The value of an analog signal changes constantly over time. Examples: Current in electrical circuits, unwanted noise in radio waves and communications.  Digital Systems: All signals are just electrical currents. A signal that can take only two fixed values ​​is called a digital signal. The two values ​​that a digital signal represents are '0' or zero and '1' or one. It is the mathematical form of power quality, expressing two states of voltage. A system that is operated by digital signals is called a digital system.  Difference between analog system and digital system: Characteristics of analog system: (i) Electrical signal that varies with time is called analog system. (ii) A system in which analog signals are used is called an analog system. (i...

Number or Number System: The method by which numbers are calculated or expressed is called number system. These numbers are processed through various mathematical processes to complete the necessary calculations. The number system we commonly use is called the decimal number system. For example 40, 1, 2, 3, 4, 5, 6, 7, 8, 9. Types of Number Systems: Number systems are generally divided into four categories, such as  (i) Decimal or Decimal Number System  (ii) Binary Number System  (iii) Octal Number System  (iv) Hexadecimal Number System  (i) Decimal Number System: We usually use decimal number system. The number system whose base is ten (10) is called the decimal number system. The numbers are 0, 1, 3, 4, 5, 6, 7, 8, 9. This practice first started in ancient India. Example:  (i)10 is a decimal number.  (ii) Binary Number System The base of the number system is two (2), that is called binary number system. Also called boolean/binary number system. The n...

 In this world of information technology, our working life has also become addicted to the illusion of this world. And so today we will talk about the field of employment based on information technology. Business Analyst Business analysts examine an organization (or part of a business) to determine how to best achieve goals. Almost always, there is a strong information technology component. Because IT is an integral part of modern business operations. For example, analysts can figure out the potential effects of computer software changes. Analysts have to adapt because job requirements vary from company to company. To become a business analyst, you'll likely need to get an entry-level position in the field and build a career from there. Business education provides an advantage alongside advanced IT training. Job Type: Business Analyst, Business & Technology Analyst, Business Development Manager (ICT/Networking), ICT Business Analyst, IT Continuity Risk Analyst, Manager (Busines...

Information technology: The current era is the era of information technology. New information in people's daily life The gathering is happening. As a result, the amount of information is also increasing rapidly. The importance of getting and using appropriate information for people in various tasks is also very important is increasing Because, it is not possible for people to remember all the information or get it at hand from the huge information store. That's why Appropriate technology is needed, through which people can easily and quickly get information whenever they want. The technology associated with data collection, verification of its authenticity and validity, storage, processing, modernization, transportation, distribution and management is called Information Technology or Information Technology for short IT I Communication technology: Data communication is the process of transferring data from one place to another place or from one device to another device through...

 Search Engine Optimization There are many search engines in the world, such as the most famous is Google, followed by Yahoo, Bing etc. If someone wants to learn HTML in Bengali, he might search Google by writing "HTML Tutorial", because he might not know the address of any website that has HTML Tutorial in Bengali. Now let's say there is a website that has HTML Tutorial in English. Now if "HTML Tutorial" If you search on Google by writing ", the first link on the first page of Google is the site, then the user who was searching for "HTML Tutorial" will definitely go to that site. This one's site showed up first on Google, even though there are many sites, blogs, forums etc. that have HTML in Bengali, the site that showed up first had adopted some techniques, these techniques are called Search Engine Optimization (SEO). -Search Engine Optimization (SEO) is mainly of 2 types, namely-- 1. On Page (which is done within the site, ie- title tags, c...