AIOU Solved Assignments Cost Accounting 444 Autumn 2022
AIOU Solved Assignments Cost Accounting 444 Autumn 2022

Image Scanner – Data Scanner Drum Printer – Pen Plotter LCD – LED Monitors Large Venue Projectors – Home Cinema Projectors

Image Scanner

An image scanner is a digital device used to scan images, pictures, printed text, and objects and then convert them to digital images. Image scanners are used in a variety of domestic and industrial applications like design, reverse engineering, orthotics, gaming, and testing. The most widely used type of scanner in offices or homes is a flatbed scanner, also known as a Xerox machine. This modern image scanner is a descendant of early fax input devices and telegraphy equipment.

Data Scanner

Scanner data are the data recorded by the retailers when consumers make purchases. They include, for each article sold in a store on a given day, the number of articles sold and the sales price. They are transmitted daily by the retail chains to Insee. These data are used in the compilation of the Consumer Price Index or in research on this indicator.

Drum Printer

The term “drum printer” refers to different types of printer designs throughout the modern digital age that have featured drum installations or setups. Two very different types of drum printers represent landmarks in the process of building ever-more-sophisticated and advanced printers as digital technologies have evolved.

Pen Plotter

Computer-driven line-drawing output devices that produce high-quality plots on paper or film. Pen plotters can use a variety of writing instruments, including wet-ink pens, ballpoint pens, scribe tips for coated materials, or some other kind of cutter for strippable film. Most pen plotters, however, use one or more pens for drawing lines in the x,y plane on paper. Broadly, there are three types of pen plotter: flatbed, drum, and belted. On a flatbed plotter, paper is held in a flat horizontal plane while a pen carriage moves the writing instrument in both x and y directions.


LCD (Liquid Crystal Display) is a type of flat panel display which uses liquid crystals in its primary form of operation. LEDs have a large and varying set of use cases for consumers and businesses, as they can be commonly found in smartphones, televisions, computer monitors, and instrument panels.

LCDs were a big leap in terms of the technology they replaced, which include light-emitting diode (LED) and gas-plasma displays. LCDs allowed displays to be much thinner than cathode ray tube (CRT) technology. LCDs consume much less power than LED and gas-display displays because they work on the principle of blocking light rather than emitting it. Where an LED emits light, the liquid crystals in an LCD produce an image using a backlight.

LED Monitors

Short for a light-emitting diode monitor, an LED monitor or LED display is a flat screen, flat-panel computer monitor, or television. It has a very short depth and is light in terms of weight. The actual difference between this and a typical LCD monitor is the backlighting. The first LCD monitors used CCFL instead of LEDs to illuminate the screen.

Large Venue Projectors

The largest permanent projection screen measures 2,115.19 m² (22,767 ft² 118 in²), installed in Music Media Dome (Russian Federation) and was achieved by B. Alibekov, D. Yankovenko, and A. Pokidyshev (all Russian Federation) in Moscow, Russian Federation, on 17 April 2018.

Home Cinema Projectors

There are two kinds of projectors for the home. One is the classic home theater projector. This is for people who want to spend the time and money to reproduce the dark viewing experience of a commercial movie theater in their home. And if you love the pure, super high-quality film and video experience, nothing can beat it. Because home theater projectors are meant to be viewed in the dark, they are designed to give you absolute maximum black levels and contrast. Meanwhile, the picture quality is optimized with not too much brightness since an overly bright picture in a dark room will give you an eye strain and a headache before too long.

The other kind of projector is the home video projector. This is for folks who want the excitement of a very big screen picture in the living room or family room, but don’t want to bother with making the room totally dark. You want a home video projector for video gaming, a big screen TV for sports and other programming, Internet surfing, as well as for movies of course. Since most people want to watch in a room that is not darkened like a commercial theater, the home video projector is designed to put out a lot of light so the picture looks bright and vibrant even in ambient light. On the other hand, the home video projector does not go for maximum black levels and contrast since that doesn’t do you any good in a room with ambient light anyway.

Image Scanner – Data Scanner Drum Printer – Pen Plotter LCD – LED Monitors Large Venue Projectors – Home Cinema Projectors

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