∏∨∪≌≌∠⊥≌≮≯/four Gigabit ☆ ▲ #■↓〓

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It's easy to input these things.

1 Enter the computer's input method into intelligent ABC, and a box bar will appear.

With 1) symbol of intelligent ABC, 2) standard or double precision, 3) comma period or comma,

The last one is the logo of the keyboard Click on the logo of the keyboard with the mouse, it will be grayed out once and blacked out once.

When it turns black at 2 o'clock, put the mouse on the keyboard logo and right click, and it will appear: keyboard, Russian, symbol, tab,-

If you want to enter something, just confirm it and you can enter it.

If you want to turn it off and turn it on again, the keyboard logo will turn gray.