Calculate projector lumens
This calculator can tell you how much lumens your projector needs Ambient light at screen: this is how much light there is on the screen. Desired contrast ratio: 7 for Passive viewing 15 for...
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Calculate heat load for equipment
The formular used in this calculator is: ?otal BTU = ?? ∗ 3.4 Were ?? is the total amount of Watts of equipment Remember that you can’t calculate BTU for an amplifier, you can...
VGA explained
VGA connectors is also called DE15 or HD15 Video Graphics Array (VGA) was developed by IBM in 1987, and can only transport analog signal, it was designed to show a resolution of 640×480 with...
What is HDMI and which versions are there?
HDMI also called High Definition Multimedia Interface, is use to transport digital high resolution video and multichannel audio over a single cable, it can also control TV and monitors through the cable. HDMI is based...
The different between HDMI 1.3 and HDMI 1.4
In this video the different between HDMI 1.3 and HDMI 1.4 is explained, like the new features 4K support:
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