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Showing posts from January, 2023

What are the different types of computer operating systems?

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  A lot of people have asked me What are the different types of computer operating systems and how do I choose the right one? There are really only 2 or 3 major operating systems to consider when buying a new computer. These operating systems include Windows, Mac OS, and Linux/Unix. These major operating systems typically run 95% of the desktop computers in use today. Operating system basics There are many different types of operating systems, but they can be narrowed down into two major categories: Windows-based and Mac OS. Microsoft Windows is by far the most popular OS in use today. The Mac OS is a proprietary system from Apple that has only been widely available since 1984, but it has gained some popularity among creative professionals. Linux is an open-source system often used as an alternative to Windows on servers and for development. AVR Expos (formerly Association of Vintage Radio Enthusiasts) is dedicated to collectors and restorers of vintage audio equipment, primarily vacuu

Why are black lit pixels in LED displays not turned off?

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  A lot of people ask about the black pixels in LED displays and why they are turned on all the time even when there is no image, so I wanted to share this knowledge that I learned from one of our partners at  AVR Expos   in San Diego, CA, who specialize in audio visual rentals, staging and production equipment. What are black lit pixels? A  Video Wall  is a screen that is made up of smaller screens. These screens are connected by a computer program. The video wall is then used to display images or videos. It can be controlled by one person on the computer, or it can be controlled by multiple people in different places at the same time. The individual screens that make up the video wall can either show one image or video, or they can show multiple images or videos at the same time. The individual screens that make up the video wall are called LED Displays. To create an effect of light coming from inside of these displays, designers often use black lit pixels. Black Lit Pixels look like

How does LED screen produce different colour at every pixe

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  AVR Expos and Orlando Audio Visual Rentals  have been assisting with events across the United States since 1988. We specialize in the production of events such as corporate meetings, expos, fundraisers and many other types of events. With so many events that we have assisted with over the years, it’s helpful to know which venues have certain guidelines and procedures that must be followed in order to properly setup and produce an event. That’s why we are here to show you how does LED screen produce different colours at every pixel? What is an LED? LEDs are semiconductors that emit light when an electric current is passed through them. LEDs are made up of a number of components including a cathode, an anode and a P-N junction. The voltage applied to the diode determines the brightness and color of the LED. The P-N junction has two layers, one that conducts positive charge and one that conducts negative charge. When charges cross the P-N junction they recombine, releasing energy in the

How can we keep LED screens from moisture?

  R Expos have been around the Washington DC area since 2001, and we’ve been a reputable provider of audio visual rentals in the area since then as well. We specialize in event technologies such as projection, lighting, scenic, and staging. With the thousands of events across the United States we have assisted with, our knowledge of hotel guidelines and procedures has grown immensely over the years. So if you are looking to rent LED screens for your upcoming events and want to keep moisture out of them so they don’t break, here’s some information about how to do so successfully. Place your LEDs in a well-ventilated area When installing LED screens, you must place them in a well-ventilated area. If an LED screen is not ventilated, it will be exposed to humidity, which will result in the screen’s colors changing. This can also cause the screen to flicker or become static. To prevent this from happening, make sure you are installing the LEDs in a space that has plenty of ventilation and i