tech sectiontech sectionThe Metrologic MH941 handheld laser scanner, sometimes called the MH941K, is a discontinued bar code scanner that was first manufactured in 1998. A bar code scanner is used to take inventory of products with bar codes or to check out items at the point of purchase in a retail store. The unit connects to a cash register via a 9-pin connector and scans items using a 675 nanometer Class I laser.
Barcode Scanning systems utilize a series of black, horizontal lines--known as Uniform Product Code (UPC)--and interprets these lines based on their density and spacing. Each line and space and density is assigned a value and when put together as a UPC, identifies products and other assigned values, such as price.The UPC is read by a Barcode Scanner that is programmed to the specific codes. If the scanner is not reading the UPCs, there are several ways to troubleshoot the problem and get back on track.
Cleaning dusty computers and components is a sure-fire way of keeping your electronics in working order. Dust and debris can cut down the life of your electronics and cause internal damage to fans and motherboards that may be partially exposed. Removing this on a regular basis ensures that your computer will run as it was intended.
Computers are one of the most useful inventions that mankind has ever created. Much like any other items in our homes, PCs can also collect dust and become dirty. Due to the fact that computers are made from complex and sensitive electronics, you will almost always want to use compressed air to gently clean them. Just follow these easy steps and have a dust-free and clean computer.
Learn some excellent tips and techniques for cleaning the computer's scanner in this free how-to video on cleaning personal electronics.
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Learn from our expert some great techniques for cleaning your computer keyboard in this free how-to video on cleaning personal electronics.
Learn from our very own expert how to clean your personal computer filters in this free how-to video on cleaning personal electronics.
Watch and learn from our expert about cleaning the inside of your computer in this free how-to video on cleaning personal electronics.
