Casio
Casio is a good choice. Its 99 1 series and subsequent models have powerful calculation functions, including calculus operation, sequence solution and various equations solution. You can even use it to input functions and draw images automatically. Take it with you during the exam. You don't need to recite many formulas.
Major brands
Casio, Ti, Hewlett-Packard, SHARP and Canon are all well-known manufacturers with guaranteed quality. They surpass the imitations of People's Education Society and can provide you with better quality and service.
reliable
Deli, Casio, Canon, Fast Tong Ling, Shengbao and Sony are all good choices. These calculators usually have many functions, such as time, alarm clock reminder, large capacity data storage and so on. We have used these calculators for more than a year, and the quality is still very good. If you want to buy it in a stationery store, the price is also very close to the people.
Suitable for financial purposes
Casio's n-95 model is a good choice, but it depends on your needs. The big keyboard calculator for finance is different from the small keyboard calculator for science, and n-95 is more suitable for finance.
Suitable for students
C Ronaldo's calculator was well received. You can try. Calculators are usually not allowed in college exams, so please make sure you know the exam rules.