Facts About the Hand Held Scanner

Hand scanner technology has been a resource point for people looking to buy computer accessories since the 90’s.

A hand held document scanner for barcodes reads recordable data from products that carry special information that they understand. This data is then forwarded to computer databases where the hand held computer scanner data is recorded to regulate inventory, process payments, update records or whatever the particular need in mind might be.

Many industries use hand held barcode scanner technology.


Because hand held barcode scanner devices work really well in industrial design, reverse engineering, inspection & analysis, digital manufacturing and medical applications arenas. The ease of carrying such devices around within a large facility makes them the ideal tools for recording necessary barcode data. In today’s industry it is common to find them in checkout stands, library counters and other desktop structured locations.

They make great order takers as long as that pesky barcode has not been bent up to bad.

An interesting point about the hand scanner includes the missing enter key. How does a hand held computer scanner know when it is time to receive the data?

The release of the trigger after scanning is interpreted as information entered into the system which is then sent to the network and processed according to the purposes of the device.

A hand held computer scanner includes both a barcode scanner (which captures the data) and a decoder (which translates the data). In the early years you would find these as two separate and specific parts of equipment. Most hand scanners that you find on the market today buy computer accessories that include both parts as one unit unless you have special technology needs with unique circumstances.

It is recommended to go with the latest technology within hand scanners as your resource point when needing to purchase this type of computer accessory.


Technology is always advancing, and this is no exception for the hand held scanner.

Facts to Consider About the Computer Power Supply Unit

Computer PSU’s provide constant electricity to the computer allowing it to work properly and these units are considered crucial if you own a computer. There are many facts about PSU’s that not many people know about and this article is going to elaborate on some facts about computer power supply units.

The life span of the device is measured in mean time between failures. Higher mean time between failures is always preferred since they ensure a long life span. Power supplies often last lesser then what the manufactures suggest. While an ordinary computer PSU has a life span of 100,000 operating house, some PSU’s have a life span of 200,000 operating house. These numbers are rough estimates of the life of these units and due to various factors the life span of a power supply unit can be reduced by 50%.

A computer power supply that has sleeved cable looks aesthetically pleasing. Sleeved cables are easier to clean and maintain hence they are preferred by many people. These sleeved cables also prevent detrimental effects on air flow hence they are often recommended over normal cables.

A greater power capacity that is greater output wattage is not always good and ideally a computer power supply unit should have a wattage that is not too low or too high. Extremely high output is usually of no use and extremely low wattage units do not function optimally. Greater output wattage does not ensure that the extra electricity is used for high end graphic cards.

A good computer PSU should supply adequate electricity to all the parts of the computer and not to just one specific part. A good power supply unit should have added features like short circuit protection, under voltage protection, over voltage protection, over temperature protection and over current protection.