Goldenlino

 WHAT IS A DIRECT DATA ENTRY DEVICE? Most times you have heard of the word direct data entry device, and you keep asking your self what are direct data entry devices. if you are such a person, then having come to this website, that alone shows you are at the right place. but before we go into the meaning and types of direct data entry device, I am going to show you the content or a summary of what you are about to read. CONTENTS/SUMMARY 1.MEANING OF DIRECT DATA ENTRY DEVICES 2.TYPES AND EXAMPLES OF DIRECT DATA ENTRY DEVICES 3.MERITS AND DEMERITS OF USING DIRECT DATA ENTRY DEVICES. MEANING ; Direct data entry devices are devices that read data, information or ideas  from a document, or file, or source  and transferred it directly to the computer system. they are different from input devices which depends  on physical interaction which means you’ll have to physically place  or do something to the device for you to receive a result. EXAMPLES OF DIRECT DATA ENTRY DE...

WHAT IS A COMPUTER NETWORK Meaning:Computer networks are the basis of communication in IT. They are used in a huge variety of ways and can include many different types of network. A computer network is a set of computers that are connected together so that they can share information. The earliest examples of computer networks are from the 1960s, but they have come a long way in the half-century since then. What Do Networks Do? Computer networks are used to carry out a large number of tasks through the sharing of information. Some of the things that networks are used for include: 1.Communicating using email, video, instant messaging and other methods 2.Sharing devices such as printers, scanners and photocopiers 3.Sharing files 4.Sharing software and operating programs on remote systems 5.Allowing network users to easily access and maintain information TYPES OF NETWORK There are many different types of network, which can be used for different purposes and by different types of people and...

WHAT IS AN API? (APPLICATION PROGRAMMING INTERFACE) API is the acronym for Application Programming Interface, which is a software intermediary that allows two applications to talk to each other. Each time you use an app like Facebook, send an instant message, or check the weather on your phone, you’re using an API. WHAT IS AN EXAMPLE OF AN API? When you use an application on your mobile phone, the application connects to the Internet and sends data to a server. The server then retrieves that data, interprets it, performs the necessary actions and sends it back to your phone. The application then interprets that data and presents you with the information you wanted in a readable way. This is what an API is - all of this happens via API. To explain this better, let us take a familiar example. Imagine you’re sitting at a table in a restaurant with a menu of choices to order from. The kitchen is the part of the “system” that will prepare your order. What is missing is the critical link to ...

WHAT IS AN IP ADDRESS Hmmm You don't know what an IP address is used for? Don't worry. Most of the billions of computer users don't know either, and to tell you the truth, that's perfectly alright. Because even though it's your passport to the Internet, you never have to think about it. Here's a "pocket definition" that you can use if someone asked. "It's a network address for your computer so the Internet knows where to send you emails, data and pictures of cats." That puts you way ahead of the curve. In fact, 98% of people on computers right now don't know what an IP address even looks like. It always helps to see an IP address example. Let's see yours. Here it is: 82.145.223.5 Don't get too attached. It's not permanent—you'll find out why in a bit... But for now, somehow you found your way to this website and page about the "IP address." And unless you're a "techie," you may not have more tha...

HOW TO CHANGE YOUR IP ADDRESS WITH EASY GUIDELINES If you want to change your IP address on your home computer, there are few ways that might work for you—some simple, some not. Before trying more complicated/technical methods described below, you can try something that's very easy. Simply turn off or unplug your modem for about five minutes. (You don't have to turn your computer off.) In many cases this alone will change your IP address when you go back online. If that doesn't work, try unplugging your modem overnight and checking your IP address the next morning. To check the IP address you're currently using, simply click find ip. Hopefully one of these simpler steps will give you the result you wanted. Have laptop, go mobile If you have a laptop, you can switch to a new IP address very easily, if only temporarily—but you can do it anytime you want. Just go to any coffee shop, bookstore or other place that offers free wireless Internet (Wi-Fi®). Your IP address will ...

HISTORY OF ALBERT EINSTEIN written by: Jennifer Rosenberg Extracted from  http://www.thoughtco.com CHILDHOOD AND BACKGROUND Albert Einstein (March 14, 1879–April 18, 1955), a German-born theoretical physicist who lived during the 20th century, revolutionized scientific thought. Having developed the Theory of Relativity, Einstein opened the door for the development of atomic power and the creation of the atomic bomb. Einstein is best known for his 1905 general theory of relativity, E=mc2, which posits that energy (E) equals mass (m) times the speed of light (c) squared. But his influence went far beyond that theory. Einstein's theories also changed thinking about how the planets revolve around the sun. For his scientific contributions, Einstein also won the 1921 Nobel Prize in physics. Einstein also was forced to Flee Nazi Germany after the rise of Adolf Hitler. It's no exaggeration to say that his theories indirectly helped lead the Allies to victory over the Axis powers in Wor...

EINSTEIN'S THEORY OF RELATIVITY Extracted from www.thouhtco.com written by ... Andrewew Zimmerman Jones. Einstein's theory of relativity is a famous theory, but it's little understood. The theory of relativity refers to two different elements of the same theory: general relativity and special relativity. The theory of special relativity was introduced first and was later considered to be a special case of the more comprehensive theory of general relativity. General relativity is a theory of gravitation that Albert Einstein developed between 1907 and 1915, with contributions from many others after 1915. THEORY OF RELATIVITY CONCEPTS Einstein's theory of relativity includes the interworking of several different concepts, which include: Einstein's Theory of Special Relativity - localized behavior of objects in inertial frames of reference, generally only relevant at speeds very near the speed of light Lorentz Transformations - the transformation equations used to calcu...

CAN HUMANS HEAR SOUND IN SPACE? Extracted from www.thoughtco.com This Article is written By John P. Millis, Ph.D Is it possible to hear sounds in space? The short answer is "No." Yet, misconceptions about sound in space continue to exist, mostly due to the sound effects used in sci-fi movies and TV shows. How many times have we "heard" the starship Enterprise or the Millennium Falcon whoosh through space? It's so ingrained our ideas about space that people are often surprised to find out that it doesn't work that way. The laws of physics explain that it can't happen, but often enough producers don't really think about them. They're going for "effect."  We often "hear" ships in movies going into "warp" or FTL drive, when, if we were outside a ship in space, we wouldn't hear a thing. People INSIDE the ship might hear something, but that's not the same as hearing sounds in the vacuum of space. NASA Plus, it'...

WHAT IS THE MEANNING OF PHOTOELECTRIC EFFECT in electrons from matter and light The photoelectric effect occurs when matter emits electrons upon exposure to electromagnetic radiation, such as photons of light. Here's a closer look at what the photoelectric effect is and how it works. OVERVIEW OF THE PHOTOELECTRIC EFFECT The photoelectric effect is studied in part because it can be an introduction to wave-particle duality and quantum mechanics. When a surface is exposed to sufficiently energetic electromagnetic energy, light will be absorbed and electrons will be emitted. The threshold frequency is different for different materials. It is visible light for alkali metals, near-ultraviolet light for other metals, and extreme-ultraviolet radiation for nonmetals. The photoelectric effect occurs with photons having energies from a few electronvolts to over 1 MeV. At the high photon energies comparable to the electron rest energy of 511 keV, Compton scattering may occur pair production ma...

WHAT IS A CONVECTION CURRENTS WHAT ARE THEY AND HOW THEY WORK convection currents are flowing fluid that is moving because there is a temperature or density difference within the material. Because particles within a solid are fixed in place, convection currents are seen only in gases and liquids. A temperature difference leads to an energy transfer from an area of higher energy to one of lower energy. Convection is a heat transferprocess. When currents are produced, matter is moved from one location to another. So this is also a mass transfer process. Convection that occurs naturally is called natural convection or free convection. If a fluid is circulated using a fan or a pump, it's called forced convection. The cell formed by convection currents is called a convection cell or Bénard cell. REASONS WHY THEY FORM A temperature difference causes particles to move, creating a current. In gases and plasma, a temperature difference also leads to regions of higher and lower density, wher...

EXAMPLES OF DIRECT DATA ENTRY DEVICES [1] Magnetic strip readers: magnetic strip reader is a device used to read data from magnetic stripes on identify and banking card. they are mostly used in reading bank cards. [2] CHIP READERS chip readers are mostly used to read data from chips on banks cards. [3] PIN PADS Pin pads are used to enter data into Automated Teller Machines, electronic funds,transfer at point of sales (POS)system,entry doors and hand held devices. You can also read  What is the meaning of ICT [4] RADIO FREQUENCY IDENTIFICATION (RFID) Radio frequency identifications are technology devices that are used to read data wirelessly from RFID Chips or tags using what is known as an electromagnetic field as it medium of transfer. [5] MAGNETIC INK CHARACTER READERS (MICR) Magnetic ink character readers are used to input data's from banks cheques. Read Benefits/uses of Artificial intelligence https://www.onclickalgo.com/jump/next.php?r=3513227 [6] OPTICAL MARK READERS (OMR) ...

APPLICATION AREAS OF ARTIFICIAL INTELLIGENCE SOFTWARES 1.BIOMETRICS Biometrics deals with the measurements and statistical analysis of people's uniqueness,physical and behavioral characteristics. USES _for identification of people under surveillance _ for authentication purposes _statistical analysis of peoples physical and behavioral characteristics. 2.DYNAMIC PROFILING Is the cornerstone of imperva's automated approach of web application security. secure sphere dynamic profiling automatically models an application structures to learn legitimate user behavior such as acceptable form field values and protected cookies. 3.VIRTUAL REALITY Virtual reality softwares creates an artificial environment that is related to human environment.e.g data google,sensory suit, strap etc. 4.QUANTUM CRYPTOGRAPHY Quantum cryptography is the technology of using light particle(photon or light rays) as it encryption.encrypted data's needs encryption key to be opened.Before now old encryption use...

WHAT IS ARTIFICIAL INTELLIGENCE artificial intelligence can simply be defined as  the ability of a digital computer or computer-controlled robot to perform tasks commonly associated with intelligent beings. The term is frequently applied to the project of developing systems endowed with the intellectual processes characteristic of humans, such as the ability to reason, discover meaning, generalize, or learn from past experience. Since the development of the digital computer in the 1940s, it has been demonstrated that computers can be programmed to carry out very complex tasks—as, for example, discovering proofs for mathematical theorems or playing chess—with great proficiency. Still, despite continuing advances in computer processing speed and memory capacity, there are as yet no programs that can match human flexibility over wider domains or in tasks requiring much everyday knowledge. On the other hand, some programs have attained the performance levels of human experts and profes...