Tech knowledge

What is a monitor? The monitor is the piece of computer hardware that displays the video and graphics information generated by the computer through the video card. Monitors are very similar to televisions but usually display information at a much higher resolution. Also unlike televisions, monitors are not usually mounted on a wall but instead sit atop a desk. Other Names of a Monitor A monitor is sometimes referred to as a screen, display, video display, video display terminal, a video display unit, or video screen. A monitor is sometimes incorrectly referred to as the computer, as in the hardware within the computer case, like the hard drive, video card, etc. For example, shutting down the computer isn't the same thing as turning off the monitor. It's important for that distinction to be made. Important Monitor Facts A monitor, no matter the type, usually connects to either an HDMI...

A computer cabinet is an enclosure with fitted, fixed or removable side panels and doors. The cabinet contains a computer rack for mounting computers or other electronic equipment. Cabinets come in a variety of sizes, colors and styles and may contain baffles and fans to facilitate cooling and minimize recycled and bypass airflow. he terms rack and cabinet are often used interchangeably. However, a rack refers to the frame for actually mounting computers and other electronic equipment, while a cabinet is fitted with doors and side panels and may enclose a rack.  A well-designed computer or server cabinet should provide significant segregation between cool air supply and hot air return. To prevent bypass air, blanking panels may be used. These fit into empty rack space, preventing cool air from moving though a cabinet without cooling the electronics. The panels can also prevent hot air (from the servers installed above and below an empty space) from pushing its way back into the ...

H ow many times every day do you hear recorded music on the  TV , in stores, in  elevators —even in the street? You'd never hear music at all if it weren't for  loudspeakers : electric sound-making machines. Most of the music we hear around us is played back with big loudspeakers attached to stereos or tiny earbud  headphones .  Radios ,  televisions , computers ,  cellular phones , intercoms, and talking toys are just some of the electric gadgets that make sounds with loudspeakers. But what exactly are loudspeakers and how do they work? How loudspeakers turn electricity into sound When things shake about, or vibrate, they make the sounds we can hear in the world around us. Sound is invisible most of the time, but sometimes you  can  actually see it! If you thump a kettle-drum with a stick, you can see the tight drum skin moving up and down very quickly for some time afterward—pumping sound waves into the air. Loudspeakers ...

# Define UPS :- An uninterruptible power supply (UPS) provides nearly instantaneous power when the main utility power source fails, allowing either time for power to return or for the user to shut down the system or equipment normally by closing running computer system applications and using the operating system to shut down the system. The user has between five and 15 minutes to shut down a system normally or bring an auxiliary power source online to restore the power supply. In addition, most UPS systems also work to address power source electrical surges, sag voltage, voltage spikes, frequency instability, noise interference or harmonic distortion from the ideal sinusoidal wave form. #Explains  :- A UPS is not limited by equipment type and ensures uninterruptible power to computers, data centers or other electrically powered equipment during an unexpected power failure. UPS units vary depending on the protected equipment size, which can range ...