1. Casio: Casio is a famous manufacturer of electronic products, and its calculator products are famous for their high quality and high reliability. Casio calculator has many functions and features, and is suitable for students, engineers, professionals and other different user groups.
2. TexasInstruments: Texas Instruments is a leading semiconductor company in the world, and its calculator products are also highly respected. Texas Instruments Calculator has the characteristics of high precision, stability and durability, and is suitable for all kinds of complex mathematical operations.
3. Hewlett-Packard: Hewlett-Packard is a famous computer and electronic equipment manufacturer, and its calculator products also enjoy a good reputation. HP calculator has the characteristics of simple interface, high accuracy and reliability, and is suitable for students and professionals.
4. Sharp: Sharp is a Japanese electronics company, and its calculator products sell well all over the world. Sharp calculator has many functions and characteristics, such as scientific calculation, graphic display and unit conversion, and is suitable for students and professionals.
5. Mitsubishi: Mitsubishi is a Japanese electronics company, and its calculator products are also recognized. Mitsubishi calculator has the characteristics of high precision, stability and durability, and is suitable for all kinds of mathematical operations.
Generally speaking, the quality of calculators from Casio, Texas Instruments, Hewlett-Packard, Sharp and Mitsubishi is guaranteed. These brands of calculators have the characteristics of high precision, stability, durability and multifunction, which can meet the needs of different users. When consumers buy calculators, they can choose their own brands and models according to their own needs and budgets.