Options/inputs
Option-= enter ≠
Options->; Input ≥
Option-<; Enter > Option-X input ≈
Shift-option-+ Enter, but because+must hold down shift, it is shift-option-+ Enter.
Shift-option- 1 input? (semicolon, such as 1? 2. Strictly speaking, the slash/on the keyboard is not a semicolon, but the shift-option- 1 on the Mac is a semicolon. )
Option -L input (logical negation)
Option -P Enter π(pi)
Shift-option-P input ∏ (meta-operation)
Shift-option-R input ‰ (micron)
Option -V input √ (square root)
Option -5 Input ∞ (infinity)
Option -O input? (empty set)
Option -W Enter ∑ (sum)
Option -F input? (function)
Option b input ∫ (integral integral)
Option-D input? (partial differential partial differential)
Option-J input? (variable)
2. Unit correlation
Option-K input angle?
Shift-option-8 Enter (temperature, such as℃, ℉).
Note: The circle of temperature and angle is different.
3. Monetary unit
Monetary units are mainly concentrated around the number key 4 and the letter Y. Because the number key 4 is above the dollar $ symbol, the buttons next to it, such as 3 and 2, are naturally considered as other currency symbols, such as
Shift-4 Enter $ (USD)
Option -4 Input? (cents)
Option -3 Enter GBP
Shift-option-2 input? (Euro)
Option -Y is? (yuan)
4, trademark related
Option-R input? (registered trademark)
Option -G input? (Copyright)
Option 2 input? (trademark)
5. Symbol association
Option-:Enter … (horizontal ellipsis)
Option-1 input? (Anti-exclamation point, the number key 1 is itself an exclamation point)
shift-option？ Input? (rhetorical question)
Option -6 Input (section break)
Option -7 Input? (separator)
6. Other commonly used symbols
Shift-option-K input? (apple Logo)
Shift-option-9 input (midpoint, a common point in English names, such as Steve Jobs and Bill Gates)
Of course, there are other symbols, such as? ∑? —ˇ? Wait, you can enter it with the option key or the shift-option key. If you want to know more about the input of keyboard symbols, just click on the input method menu, select "Show Keyboard Display Program", and then press option or shift-option to see it. You don't really need a comparison table.