Swiss Micros DM-41L Scientific Programmable Calculator Titanium

Description

Description
The DM41L  is a clone of the HP-41CX including a real-time clock but in the housing of the Voyager series. The alphanumeric LCD screen of the HP-41C revolutionized the way a calculator could be used, providing user friendliness (for its time) and expandability (keyboard-unassigned functions could be spelled out alphabetically). By using an alphanumeric display, the calculator could tell the user what was going on, displaying meaningful error messages ('ZERO DIVIDE') instead of simply a blinking zero. It could also prompt the user for explicit arguments ('ENTER RADIUS') instead of just displaying a question mark.
Specifications
Specification
Details
Construction
Case made from a sand-blasted Grade 1 Titanium housing, brown anodized and laser engraved
Software
ARM microcontroller emulating the NUT processor
Processor
LPC1115 32-bit ARM Cortex-M0 microcontroller
Memory
64 kB internal flash, 8kB RAM
Display type
Reflective Positive FSTN
Display resolution
132 × 16 pixels
Display active area
69.1 mm × 10.0 mm
Display dot pitch
524 µm × 626 µm
Connectivity (PC)
USB Mini-AB port for firmware update and data exchange via CDC
Battery type
1 × CR2032 lithium coin cell, 3.0 volts
Battery life
Up to 5 years
Sound
4 kHz resonance frequency Piezo-electric buzzer
Size
129 mm × 79 mm × 13 mm
Weight
150 g
https://technical.swissmicros.com/dm41x/doc/dm41x_user_manual/