The USB (Universal Serial Bus) is a standard that defines the cables, connectors and used a bus to connect, communicate, computers, peripherals and electronic devices protocols Transmission Rates Low speed (USB 1.0). Transfer rate up to 1.5 Mbit/s (188 kB/s) used in keyboard, mouse ... transfer rate up to 12 Mbit/s (1.5 MB/s) High Speed ??(USB 2.0): Rate transferencia up to 480 Mbit/s (60 MB/s) SuperSpeed ??(USB 3.0) transfer rate up to 4.8 Gbit/s (600 MB/s) Connector Types 1 - USB type A (4 pin) 2. - USB type B (4 pin) 3 - Mini A (5-pin) 4 - Mini B (5-pin) 5 - Micro A (5-pin) 6 - Micro B (5-pin)

or horizontal. The micro USB with five pins, which pins identification (ID) Micro AB USB connectors special work. AB connectors with pin ID can allow the device to function as a connector A or B to standard USB technology. This gives the new smart phones and other devices the option to act as either a single storage device or as provi

The mini USB connectors are smaller than their standard counterparts and have USB fifth pin. The fifth pin is known as the pin ID and is typically not used in mini USB connectors. It was designed to allow later improved USB technology. The mini USB connectors have a cycle life of at least 5000 connections and disconnections, which accommodates the mobile nature of the devices that are designed to interact. The standard USB connectors are generally used with devices that are stationary and not disconnected often.

One hertz is one cycle per second, meaning repeating cycle as an event. For example, hertz is applied physics measuring the number of times for a second wave (either acoustic or electromagnetic) is repeated or can be applied, among other uses, to ocean waves that reach the Beach vibrations per second or a solid. The quantity that measures the frequency hertz is called,in this regard, the inverse of the period. One hertz is an oscillation frequency of suffering a particle over a period of one second.

USB 3.0 is the second major revision of the standard Universal Serial Bus (USB) connectivity for computing. USB 3.0 has transmission speeds of up to 5 Gbit/s, which is 10 times faster than USB 2.0 (480 Mbit/s). Connector Types 1 - USB type A plug 2 - 3 USB type A female - USB type B 4 - Micro USB B

USB-C reversible USB version called USB cables USB Type C Type C or USB reversible. The important thing is this type of USB is that it has top and bottom. So you may save the blows that are given involuntarily to connect the connector upside down. It is also characterized in that when connected will make an audible "click". The USB-C or reversible USB cables can reach 10 Gbps and support USB 3.0, 3.1Use is estimated up to 10,000 applications and has some measures 8.4mm x 2.6mm is also compatible with USB 3.1 and USB indicate creators

The EAS RF (Electronic Article Surveillance) monitoring system or electronic surveillance system for items is a very common and effective method to guarantee the security of your business and minimize the risk of theft or theft.

This type of systems can be implemented in rigid or flexible systems, among which we can find the most common types.

Remember that depending on their type they can work in a frequencyto different.

• Magnetic label
• Acustomagnetic label, work on 58 MHz frequency.
• Radio frequency (RF) label, works in the frequency of 7.4-8.8 MHz, although they usually work in the 8.2 MHz, it is the most used in stores and businesses.
• Microwave label, they work in the frequency 2450 Mhz.

As mentioned, the most common security labels are RF, since it can befind in different formats, among them the most common:

• Rigid RF tag: Rigid security tags ideal for textile items, such as shirts, pants, coats etc ...
  This type of labels consist of a base of rigid plastic material connected to a pin type pin. Once united, it is only possible to uncouple them with a magnetic system.
• RF label with cable: Semi security labelsThanks to its steel cable, they can be adapted to other types of products, such as wine bottles, bicycles, machinery on display, etc. The decoupling system is by magnetic system as are the rigid ones.
• Soft RF label: Flexible security label, normally used in all types of products such as clothing, footwear, books, tools, food, etc ... thanks to its adhesive system. The system of deactIivation is through an RF deactivator. This deactivation system emits a very high RF impulse that manages to burn the internal diode, leaving the tag unusable.

Inside the RF tags we can find an aluminum helical antenna, connected to a diode or an RC circuit. This type of systems do not require power to operate, the anti-theft arches are responsible for sending an electromagnética that is absorbed by these labels that activate their circuit generating a return signal.

In the detection system based on EAS RF an emitter and receiver device is required, the most used are the anti-theft arches.
One of them works as an emitter and another as a receiver. Its installation must be done at the entrance or exit of the business and not placed less than 80 cm from each other.
These arches needan own food and can be regulated to be more or less sensitive.

The detection operation consists in that the emitter arc is sending (A) a signal that activates the label, when passing an alarm tag between the two arcs the label receives the signal from the emitter arc, this signal emitted by the label is received by the receiver arc (B) that is in charge of making the alarm go off.

The EAS RF deactivator is a device designed to electronically disable soft, adhesive and disposable anti-theft labels.

Its design is usually flat type, to facilitate its placement and installation on tables, counters etc.

Its operation is simple, it is only necessary to pass the label over the deactivator (A) and it will be unusable.

To deactivate the tagta (B) the system applies a very high electric impulse (C), this impulse is able to disable (destroy) the diode incorporated in the circuit of the label.

Once the label passes through the arc it will not detect the diode and the alarm will not be activated.

ABS material (acrylonitrile butadiene styrene) is a type of thermoplastic that is very resistant to impact or shock.

Its applications are several, for example is a material widely used in the manufacture of interiors or components of cars such as moldings, as well as in products for domestic use such as toys, tools, housings of electrical devices etc.

One of its most important characteristics is its great tenacidad in almost all types of temperatures.

Being a very hard material has good chemical resistance, low water absorption and high resistance to abrasion, where other types of plastics would be more brittle.

This type of material is becoming very famous in the particular field and widely used due to the great growth in the sales of domestic 3D printers, the main printing raw material.next to the PLA.

Identification of ABS
Parts that are made of ABS material must be marked in accordance with ISO 11469 (DIN 58840).