Digital board is a tool for mathematics enlightenment, which can help children know numbers, cardinality and ordinal numbers. In daily use, you need to pay attention to the following details:

1. Don't plug in and out the interface too often. If you don't use it for a long time, remember to unplug the USB interface of graphics tablet from the computer to reduce consumption.

2. It should be stored indoors, as long as you don't spill water or milk tea on the board.