The DM42n, a flagship RPN calculator by Swiss Micro, is a faithful tribute to the iconic HP-42S, often considered the greatest calculator ever created. Building upon the DM42, this improved version features significantly more RAM, a substantially faster CPU, and a modern USB-C port.
The DM42n is the most precise calculator on the worldwide market — second to none — and uses the powerful and proven RPN logic. The DM42n runs Free42, based on a decimal floating-point math library and IEEE 754-2008 quadruple precision decimal floating-point, encoding numbers in 16 bytes and giving 34 decimal places of precision with exponents ranging from -6143 to +6144.
DM42n calculator features
- 34-digit mantissa for ultimate handheld precision
- Uses proven RPN logic
- Programmable
- Alphanumeric display
- Custom program labels execute upon a single key press
- Solver
- Integration
- Matrix operations
- Complex numbers support
DM42n hardware features
- A USB-C connector for complete and easy calculator contents backup
- Sleek and sturdy hardware based on a stainless steel shell
- Multi-line program editor
- Fast STM32U5 CPU
- Single coin-cell operation
- Low power - long battery life