How to make an English class card?

The practice of English class card is as follows:

1, you can use PS to create a canvas of the required size.

2. Fill the page with blue, then select all, then reduce 10 pixels, and fill it with white after deselecting.

3. Then click the text tool, set the font and size, enter the English translation of the class name and save it.

At present, electronic class cards are very popular in schools.

Electronic class card is also a kind of LCD.

Advantages of LCD:

1) Low voltage, low power consumption.

The working voltage is very low, only 2V~3V can work, and the working current is only a few microamperes, that is, each displayed character is only a few microamperes. A small button cell can last 1~2 years, which is unmatched by any other display device. In terms of operating voltage and power consumption, liquid crystal display just adapts to the development of large-scale integrated circuits. Such as electronic watches, calculators, portable instruments, portable computers and GPS electronic maps, are all possible.

2) Low voltage drive.

Generally, the threshold voltage of twisted nematic (TN) devices is only 1.5~2V, which can directly match large-scale integrated circuits.

3) Flat structure.

The basic structure of a liquid crystal display device is a thin box made of two glass substrates. This structure is most suitable as a display window, which can accommodate the largest amount of display content in a limited area and has the highest utilization rate of display content. In addition, this structure can be made not only very small, such as the display window used in cameras, but also very large, such as large-screen LCD TVs and large LCD billboards.