The Underwood 400 calculator is an electronic desktop model introduced in the 1970s, designed to offer reliable and accurate performance in professional environments.
This device is characterized by its robustness and ease of use, with a large, intuitive keyboard that allows for quick data entry. The Underwood 400 supports basic arithmetic functions and some advanced operations, making it suitable for a variety of applications, from everyday calculations to more complex accounting needs. Thanks to its solid construction and consistent performance, the Underwood 400 has been a popular choice among professionals and businesses.
