The principle of magnetic card, the advantages of magnetic card?

The advantages of magnetic cards are as follows:

Magnetic cards are used to make credit cards, bank cards, subway cards, bus cards, ticket cards, and ** cards; Video game cards, tickets, air tickets, and various transportation toll cards, etc. Today, we will use magnetic cards on many occasions, such as dining in the canteen, shopping in Shangfang, taking a bus, taking a **, entering the controlled area, etc., and so on. Offered some security, not easy to fake, but later cracked.

The process is relatively simple and the cost is low.

The advantages of magnetic truck tickets are as follows:

The basic point of comparison is that the process difficulty, cost, ease of use, durability and safety are improved.

The earliest of the paper, advantages: simple and easy to use, the cost is almost 0. Disadvantages: easy to be forged, easy to wear and tear if used as a long-term ticket.

Magnetic card, advantages: provide a certain security, not easy to counterfeit, but later has been cracked by laughter. The process is relatively simple and the cost is low.

Disadvantages: It is easy to degauss during long-term use, and requires additional maintenance costs; After cracking, it is no longer secure and can be forged; It is slightly difficult to eliminate and use, and the card must be swiped correctly.

Advantages of IC card: the security is very high, durable, the card is not easy to wear, the chip content will not disappear, and it is convenient for long-term use; Contactless cards are easy to use. Disadvantages: The relative cost is relatively high, and the manufacturing process is more complex.

Magnetic cards are easy to use, cheap to cost, and have a wide range of uses, which can be used to make credit cards, bank cards, subway cards, bus cards, ticket cards, and ** cards; Video game cards, tickets, air tickets, and various transportation toll cards, etc. Today, we will use magnetic cards on many occasions, such as dining in canteens, shopping in shopping malls, taking buses, taking **, entering controlled areas and selling sedan cars, etc.

Advantages of magnetic cards: provide a certain amount of security, not easy to counterfeit, but have been cracked later. The process is relatively simple and the cost is low.

1. In terms of storage capacity:

The IC card can store megabytes, the magnetic card can only store a maximum of a few hundred bytes, the IC card has RAM, ROM, EEPROM and other memories inside, which can store text, sound, graphics, images and other information, and the storage area can be divided, with different access levels.

2.In terms of encryption:

The IC card can be encrypted, but the magnetic card cannot be encrypted. The magnetic card does not have a control circuit, so its internal data reading and writing cannot be safely controlled, and the reading technology is also sequential and mechanical, while the IC card can control the circuit to read and write its internal data, and the erasure control and reading technology are random. The encrypted IC card itself has a secure password, and if you try to illegally access the data, the card will self-destruct and can no longer be read or written.

3.Dependency aspects of the network:

The IC card can be used offline, but the magnetic card cannot be used offline. Magnetic card in the use of the terminal and the host to ensure the strong real-time performance, once the host or network failure will paralyze the whole system, and the IC card can store a large amount of data, and controlled by the logic circuit, all operations are completed by the terminal independently, so that it in the application environment to the computer network real-time, sensitivity requirements are reduced.

4.In terms of service life:

Magnetic cards have a short service life, generally between one and five years, while IC cards can reach more than ten years.

5.In terms of anti-interference:

The magnetic card is poor in terms of anti-sonic, anti-static, waterproof, etc., and the magnetic stripe cannot be wiped randomly, while the IC card is strong in these aspects, as long as the chip should be kept clean.

6.Anti-counterfeiting:

Magnetic cards are easy to forge, and the IC card itself has extremely strong logical encryption, which makes the counterfeiting rate more difficult.

7.Ease of use:

IC card reading and writing equipment is simpler, more reliable, cheaper, easy to promote, and easy to maintain than magnetic card reading and writing equipment.

Advantages of magnetic cards: provide a certain amount of security, not easy to counterfeit, but have been cracked later. The process is relatively simple and the cost is low.

Magnetic card is a card-like magnetic recording medium, which uses a magnetic carrier to record character and numerical information for identification or other purposes. The magnetic card is made of high-strength, high-temperature resistant plastic or paper-coated plastic, which can be moisture-resistant, wear-resistant and flexible, easy to carry, and more stable and reliable to use. For example, the bank card we use is one of the most common magnetic stripe cards.

Magnetic cards are convenient to use, cheap in cost, and widely used in vertical ways, which can be used to make credit cards, bank cards, subway cards, bus cards, ticket cards, and ** cards; Video game cards, bus tickets, machine tickets and various transportation toll cards, etc. Today, we use magnetic cards on many occasions, such as dining in canteens, shopping in shopping malls, taking buses, taking **, entering controlled areas, and so on.

The magnetic truck ticket is made of a certain material card base and a fine particle magnetic material evenly applied to the card base, and the magnetic card is read and written.

The device consists of a ring-shaped iron core with a void and a line pattern wound around the core. Magnetic truck tickets change by the magnetic field of the magnetic stripe on the card.

to record the information. When recording, the magnetic surface of the magnetic truck ticket moves at a certain speed, and the gap or the recording head respectively.

Magnetic face-to-face contact. As soon as the current is applied to the coil of the magnetic head, a magnetic field proportional to the current is generated at the void, so the magnetic card.

The magnetism in contact with the void is magnetized. When the magnetic truck ticket is magnetized, the magnetic layer that leaves the void remains.

Remanence corresponding to the change in current.

If the current signal changes according to the sinusoidal law, then the remaining magnetic flux on the magnetic truck ticket also changes according to the sinusoidal law, and the recorded signal is stored on the magnetic truck ticket in the form of sinusoidal remanence.

The information recorded on the magnetic stripe delay disturbance adopts frequency modulation coding technology, which has the ability of self-synchronization. At each clock cycle, the flux to.

One less change, resulting in a change in magnetic flux in each cycle indicates a logical "1", and if there is no flux change, a logical "0". The residual magnetic induction strength on the magnetic truck ticket plays a decisive role in the working process of the magnetic truck ticket. Magnetic truck tickets to:

The electromotive force is induced, which transmits the recorded signal.

The head is an iron core made of a soft magnetic material with high permeability, and a winding coil is wound around it. There is a very strip in front of the head.

The narrow gap can be regarded as two effective magnetoresistors connected in parallel, and the effective magnetoresistance of the seam gland is much greater than the magnetoresistance of the working head core, so most of the magnetic flux on the magnetic truck ticket is input into the head core, and cross-linked with the coil windings on the working head, thus inducing electromotive force. The electric electromotive force induced in the operating magnetic winding is proportional to the rate of change of the magnetic flux.