Barcode readers are electronic devices that allow you to read the information contained in a bar code and transmit it to the POS terminal or computer. Barcode readers are present in all areas of society, because bar codes are massively implanted in the industry, companies or institutions, in tasks such as control stocks, invoicing, control of presence and access, quality control or process control. Features of barcode readers basically consist of three components: scanner: reads the barcode symbols. Decoder: the read barcode scans and converts the information to an appropriate data format. Communication interface: allows the connection between the reader and the computer. Usually barcode readers transmit real-time data to the computer that contains the database, although sometimes the own reader stores the information in its memory. Some readers barcode they incorporate an LCD screen that displays the information corresponding to the reading, very useful function in application of inventory or supplies. The main advantages of bar codes are: speed in data capture.
Elimination of typing errors. Ease of use. Low cost of implementation. Connection see how barcode readers connect to the computer: corded barcode readers: USB port, RS-232 serial port or PS/2 keyboard port. Wireless barcode readers: Reader connects via Wi-Fi or Bluetooth to the communications database and load. Barcode readers work mode has three working modes: Manual: pencil or pistol-shaped.
Fixed: they are fixed to the wall or countertop. Semi-fixed: they have support and support both manual use as fixed. Reading technology there are several technologies of reading on barcode readers: stylus: has a light source and a photodiode at the end. When you move the pen to the barcode through the photodiode measures the intensity of the reflected light and captures the information. Laser: work like the stylus, except that the light source is a laser, well a single line (one-way, need to orient the code) or several (omnidirectional, just submit the code). CCD (Charge Coupled Device): capture the code through a series of hundreds of small light sensors lined up in a row. Camera: a camera and image processing techniques are used to decode the barcode. They tend to be CCD cameras with sensors arranged in a two-dimensional array. Mobile phones can function as readers of barcode thanks to the built-in camera, having been developed optimized 2D bar codes for mobile phones, such as codes QR.
What is important in the manner of a man? The most important is harmony. Own through it and creates individual and unique style of a man who we remember. However, to achieve true harmony rather difficult. The important point is to a considerable degree of elaboration and attention to detail. After all, even the smallest detail can ruin the effect of integrity and harmony. 
The Theology until then considered the soul spiritual as being separate of the sensitive soul and the vegetative one. Toms defended the thesis of that the soul of the man is joins, and mainly, it is only responsible for all its acts, the man is the only owner of its proper choices, and possesss a natural illumination, that consists of ' ' natural light of razo' ' , light this that was given in them of an only time for God. In Toms de Aquino, its workmanship is observed in all the presence of ' ' quaestio disputatas' ' , mainly, its concern in presenting the thought adversary ' ' ipis litteris' ' , without no alteration in the direction, without devagaes, it is seen exposition of a thought such which it is. Toms is always locating its thought in opposition to the dominant doctrines of the time, and how much the workmanship ' ' Of Magistro' ' , this could not be different, has since this workmanship not backwards only philosophical conceptions on the Philosophy of the Education, but brings new ideas what mainly he was defended until then. Ahead of this, it is of extreme importance the use of ' ' quaestio disputatas' ' , not so that ' ' aluno' ' if it tires, but so that this really it understands what it is wanted to say. The main idea proposal for Toms is that the man possesss one ' ' alma' ' that she is the representative of the beginning of the life, therefore is part of the substantial composition of the livings creature, that is, is the powers that the soul possesss that they make with that the man can or not play definitive function, whose requirements are inherent to its soul. It is through it that one plays the functions, with peculiar characteristics closely related to the college of the vegetative life.
To line up the internal voices, the emotions and reasons human beings in a new correspondence, a new social model to be searched. The answers that others had found for the questions that all we make do not serve for each one of us. E, the rituals possess a social function to stand out the models, the standards of social behavior therefore that Walter Benjamim, the apologist of modernity will go to write an important book call ' ' Passagens' ' , in end of century XIX, where it will go to point varied moments of rupture or felt crisis of of the people who lived in the great cities in that turn of century, in relation the social perception of the urban reality that they lived that they were multiple, varied, without models, opened for new and the not necessarily best ones. To the times people do not understand that the souvenirs do not say concerning a distant past, but they say in them of recent events as the event of today of morning, the film of last week, the candy that I ate yesterday. All these events are part of our memories that are revividas in each souvenir, in the interior of us as an event power. Many of us for times we do not obtain to sleep because we are to think concerning the events of the day. What we are making is not disconnect in them of our souvenirs on the facts of the day is remoendo the souvenirs of as we act or as we would like to have acted. E, the souvenir are not the reality of that moment are not the reality in fact, this do not exist, because the said reality is lived and it only exists inside of each one of us.