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Articles by Praveen Varghese Thomas
Page 52 of 75
PDA: Personal Digital Assistant
Introduction PDA which stands for Personal Digital Assistant is a handheld device that is usually used for business use or personal use. It is used to keep schedules, information such as address books and calendars. They are also used for storing information and computing. Almost all the PDAs that existed used to have a physical keyboard which was small in size. Some of them used to have a small sensitive pad that could be used to detect handwriting to make easy notes. Basic Features of PDAs Displays The displays were very similar to the laptop screens at the time. ...
Read MorePNG: Portable Network Graphics
Introduction An effective file format for lossless, portable, and well-compressed bitmap storage is Portable Network Graphics (PNG). It may be read and exchanged between computers with ease and requires little storage capacity. The GIF format can be replaced with the Portable Network Graphics format, which can also be used in place of the TIFF format for many common applications. The Portable Network Graphics format is fully streamable and has a progressive display option, making it ideal for online viewing, such as on the Web. All formats and functionality may not be supported by all web browsers. If you want ...
Read MoreRO: Reverse Osmosis
Introduction Water is absorbed by plant roots from the soil and by human kidneys from the blood as examples of osmosis. Osmosis occurs without the need for energy in a natural way, but it requires energy to reverse the process. A semi-permeable membrane is impermeable to the majority of dissolved salts, organics, microorganisms, and other contaminants. What is Reverse Osmosis? Water is demineralized or deionized via the reverse osmosis technique, often known as RO, which involves forcing the water under pressure through a semi-permeable Reverse osmosis Membrane. You must first comprehend the naturally occurring process of osmosis in order to ...
Read MoreTFT: Thin Film Transistor
Introduction A Thin Film Transistor is a type of field-effect transistor that is usually used in a liquid crystal display(LCD). TFTs are arranged in a matrix which is why they are referred to as “active matrix”TFT. This type of display is where TFT is featured for each individual crystal. They perform as switches which enable the pixels to change their state rapidly which makes them turn on and off relatively quickly. They have uses ranging from digital radiography detectors to displays that are used in daily use. These transistors are the driving force behind flat panel displays such as desktop ...
Read MoreUPS: Uninterruptible Power Supply
What is an uninterruptible power supply? An uninterruptible power supply (UPS) is a component that enables a computer to continue operating for at least a brief period of time when incoming power is disrupted. Utility electricity maintains and replenishes energy storage as long as it is in use. The longer electricity can be maintained, with some practical restrictions that will be covered later, the more energy can be stored. The technology makes it possible for different UPS systems to perform their functions differently. How does an uninterrupted power supply UPS work? When your primary power source fails or ...
Read MoreVGA: Video Graphics Array
Introduction For the PS/2 range of PCs, IBM launched VGA in 1987. The first graphics card with the ability to display up to 16 colors at 640 x 480 screen resolution was the original VGA chipset. VGA could display up to 256 colors even at a reduced resolution of 320 x 200 pixels, which made it simpler to represent lowercase letters. Other manufacturers quickly followed with graphics cards that could display thousands to millions of colors, but they were all supersets of VGA. Since VGA is supported by all PCs, all of these graphic cards had the same foundation. ...
Read MoreVIRUS: Vital Information Resources Under Seize
Introduction In the modern world, most people use computers & internet facilities. Computers made our life easy, but along with these facilities, we are at threat of losing data due to attacks of computer viruses. These viruses became stronger day by day. To protect computer systems from virus attacks we need to take precautions like installing & running antivirus software, we should carefully use computers & internet facilities. A computer virus is a malicious software that interrupts the functioning of the computer system. This may cause corruption, data theft, and also the crashing of a computer. What is VIRUS? ...
Read MoreDSLR: Digital Single Lens Reflex
Introduction DSLR is the abbreviation for digital single lens reflex, it is a type of camera that uses a reflex mirror and single lens to capture the light onto the sensors. DSLR started becoming popular and eventually replaced the film-based SLRs in the 2000s. DLSRs had many advantages over film-based cameras such as larger storage as you weren’t limited to a fixed film size and could store thousands of pictures in the digital format. Learn more about DSLRs in the following article. DSLR: Full Form and Meaning The full form of the word DSLR is Digital Single Lens Reflex. ...
Read MoreCAD: Computer Aided Design
Introduction The process of creating, altering, analyzing, or optimizing a design with the help of computers (or workstations) and also using computers to assist with engineering and design for a wide range of projects across numerous industries is known as computer- aided design (CAD). Computer-aided geometric design (CAD) is another procedure that is comparable to CAGD. CAD's goals are to boost productivity and enhance design quality and amount of detail. It also aims to optimize and streamline the designer's process and improve documentation. Types of computer-aided design 2D CAD The first CAD software was created in the early 1970s ...
Read MoreBLOB: Binary Large Object
Introduction The abbreviation for "Binary Large Object" is BLOB. BLOBs were invented by Jim Starkey and were originally just large amorphous chunks of data that may be many gigabytes in size. In the modern world, a whole lot of data being available online for everyone to use requires proper containment and encryption, that’s where BLOBs come in handy. Different types of data are stored in BLOBs, QR codes are one of the most common BLOB types. BLOBs The term Binary Large Object (BLOB) refers to how database management systems handle and store long strings of data. It stores multimedia objects/data ...
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