You can use Alt special symbol input method to input, and the input method is as follows:

First of all, you can use any input method and hold down the Alt key.

Second, then use the keypad of the keyboard to input the corresponding codes in turn.

3. For example, the input method of "①" is to hold down the Alt key and input "4 1689". When you release Alt, you will enter a "①" symbol.

4. The input code of the circled number 1- 10 is shown in the figure below.