What does a mouse store? - briefly
A computer mouse includes a small amount of non‑volatile memory—usually a few kilobytes—that retains user‑defined parameters such as DPI presets, button macros, lighting schemes, and profile data. The same storage also holds the device’s firmware and calibration information.
What does a mouse store? - in detail
A computer mouse contains non‑volatile memory that preserves configuration data even when power is removed. This memory stores the following elements:
- Firmware code that controls sensor operation, communication protocols, and power‑management functions.
- DPI (dots‑per‑inch) settings, allowing the device to recall user‑selected sensitivity levels.
- Button assignments and macro definitions for programmable buttons, enabling custom actions without additional software.
- Profile identifiers that link the mouse to specific user profiles on the host system, facilitating automatic switching when different users log in.
- Calibration data for optical or laser sensors, ensuring consistent tracking accuracy across varying surfaces.
- Battery‑level thresholds and charging parameters for wireless models, supporting optimal power‑usage behavior.
In addition to the built‑in storage, many mice support external configuration files that the host operating system can load. These files mirror the internal data structures, allowing backup, transfer, and bulk editing of settings. The combination of on‑device memory and host‑side files provides a complete solution for preserving user preferences, sensor performance data, and operational firmware across sessions and hardware changes.