It is pointed out that out of the sixteen operations only exclusive disjunctional operation and bi-conditionaloperation can make binary set form group;
异或运算和与运算能使二元集成为环以及等值运算和或运算能使二元集成为环；
2
It combines a conditional and an operation in one.
它在单个命令中组合了条件和操作。
3
A conditional connection executes the control flow only if this operation is successful.