What is a key core? Many people confuse these two concepts when using and repairing keyboards. Simply put: keyboards and key cores are two completely different things; their relationship is similar to that of a "car" and an "engine." Here's a detailed explanation:
I. Definitions of Keyboards and Key Cores
1. Keyboard
A keyboard is a complete input device. It's the entire device you see, touch, and use to type. It includes the casing, circuit board, all the keys, connecting cables (or wireless modules), and the internal switches (key cores).
2. Key Core
The key core usually refers to the independent, removable mechanical switch beneath each key in a mechanical keyboard. It's the core triggering component of the keyboard, directly determining the key feel (a crisp "click" or a quiet linear feel), sound, and lifespan.
II. Common Types: Based on feel, they are mainly divided into three categories:
1. Linear Switches: Linear, no tactile feedback, quiet and smooth (such as Cherry MX Red switches).
2. Tactile Switch: Provides a distinct "click" tactile feedback when pressed (e.g., Cherry MX Blue).
3. Pre-tactile Switch: Offers a slight tactile feedback, but not as pronounced as a Blue switch (e.g., Cherry MX Brown).
Function: Responsible for the physical closure and signal triggering of a single keystroke.
Analogy: Like a car engine. A car can have different engine models; similarly, a keyboard can have different feel or brand of key stems.
III. Main Differences Between Keyboard and Key Stereotype
1. Different Nature: Keyboard: A complete, fully functional device; Key stem: A single core component inside the keyboard.
2. Inclusion Relationship: Keyboard: Includes key stem, keycaps, circuit board, casing, etc.; Key stem: A single core component inside the keyboard, contained within the keyboard itself.
Supplement: Common Names for "Key Stereotype"
In mechanical keyboard enthusiast circles, "key stem" is more commonly called "switch" or "mechanical switch." For example, when we say "this keyboard uses blue switches," we are referring to the type of key mechanism it uses.
Therefore, a more accurate correspondence is: Keyboard ≈ the entire device; Key mechanism (switch) ≈ internal switch.
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