1. How Mouse Works
Pointing device detect two-dimensional motion
- Physical movement
- Optical sensor, omit light downward, next to a tiny camera
- Surface reflection, take pictures per second (often thousands)
- Signal Processing: compare consecutive images
- Translation to cursor movement
1.1. Camera?
Resolution: just 16x16 or 30x30, the reason to process fast
Surface imaging: works by looking for patterns and irregularities on the surface
1.2. Algorithm
Find the shift or displacement
Cross-correlation methods
2. How to Act Genuine
- Specific
- Timely
- Quality over Quantity
- Tone
- Listen actively
3. How Eraser/Rubbers Works
- Friction, cause the particles to be lifted
- Stickiness
- Crumbling: the shedding property is purposeful, so the eraser continually present a fresh surface
4. Why Nikon Lens Brand Nikkor
Since 1930, R from an earlier company name
- Japan Optical
- Nippon Kogaku
R? The suffix that was traditionally used in the naming of lenses
5. Macro? Micro?
From Ancient Greek