One: high grade does not mean high efficiency
Educational notebooks and educational PCs actually have the same attributes, and the basic principle of buying is often enough. However, some purchasers often think that notebooks are inferior to PCs when they buy notebooks, so they should try to purchase high-end products.
In fact, the purchase of high-end notebooks is nothing more than to obtain better quality, but in terms of current product quality, the overall difference between brands is not very big, and the high-end price of the notebook is not necessarily better than the service life Low-end products. In addition, as far as the student community is concerned, the laptop computer can be used as long as it satisfies teaching and there is no confidential document. Even if it is damaged, it will not cause excessive economic losses. Considering that the performance requirements of educational machines are often not high, if you pursue the high end blindly, it is a waste of money.
Second: The interface may not be used for more
As more types of external devices are now available, users often use the notebook's expansion interface as an important purchase indicator when purchasing. But for educational notebooks, this is the second misunderstanding. Because many interfaces are actually set for entertainment purposes, these interfaces are not necessary for educational notebooks.
In fact, the main function of educational notebooks is nothing but the exchange of data, connection projection, Internet access and other functions. So only need the necessary USB interface, VGA interface and RJ45 network interface is enough to meet the needs. Excessive interfaces will not be of much use other than increasing product costs.
Three: Small size is not necessarily light
In current schools, a teacher may have to go to several classrooms a day. Too heavy a notebook may be somewhat inconvenient. In this case, some schools tend to prefer small-sized notebooks up to 12 inches in size when purchasing educational notebooks. Think of small size and light weight. In fact, this is the third misunderstanding to be said today.
Because the small screen model actually has little difference with the mainstream 14-inch screen model. The mainstream of small screen models is generally 1.8kg-2.0kg, 14-inch mainstream models are generally 2.4kg. A few hundred grams of weight, that is, take a bottle of mineral water.
Not only that, but actually there are two more obvious weaknesses in the small size notebooks below 12 inches compared to standard size notebooks. First, the 12-inch display font is small, the user must be closer to the screen to see the font, and long-term so for some teachers of last year may not be convenient. In addition, the size of the notebook below 12 inches due to process and other reasons, the price is often higher than the 14-inch standard screen notebook 15% higher, from the cost point of view, this is not conducive to the school's bulk purchase.
to sum up:
Although education notebooks need to pay attention to many issues when purchasing, in fact, the current market for education users to launch a lot of laptops, such as HP 450 is a good product line. In short, education notebooks should still be purchased according to the principles that are good enough to use. It must not be blind.
Electromagnetic Relay is an electronic control device that has a control system (also called an input loop) and a controlled system (also called an output loop). It is usually used in an automatic control circuit, which actually uses a smaller current and is lower. The voltage is an "automatic switch" that controls large currents and higher voltages. Therefore, it plays the role of automatic adjustment, safety protection and conversion circuit in the circuit.
Electromagnetic Relay,MY Series Electromagnetic Relay,Mini Electromagnetic Relay,LY General Electromagnetic Relay
Ningbo Bond Industrial Electric Co., Ltd. , https://www.bondelectro.com