(1) High school.

A few areas can bring calculators.

(2) University stage

For a certain course, such as>, you must bring a calculator.

B In some courses, such as>, some schools are allowed to bring calculators, while others are not.

(3) For the college entrance examination, manual calculation is enough.

(4) After entering the university, there will be specialized courses for science and engineering majors, such as MATLAB.