It often appears in mathematical problems such as newly defined operations.
In the outer circle, the operation symbol of a plus sign in the middle appears in different places, indicating different things.
Mathematical logic is the symbol of XOR operation.
Logical operation is also called Boolean operation.
XOR logic operation (half addition operation)
XOR operation is usually represented by the symbol "⊕", and its operation rules are as follows:
0⊕0=0 0 XOR with 0, and the result is 0.
0⊕ 1= 1 0 and 1 are XOR, and the result is 1.
1⊕0= 1 1 XOR with 0 and the result is 1.
1⊕ 1=0 1 and 1 are XOR, and the result is 0.
That is, when two logical variables are different, the output is 1.