Mechanical key component and mechanical keyboard

A mechanical keyboard, comprising:

• a plurality of mechanical key components, each including:
• a circuit board with a first sensing electrode;
• an elastic element disposed on the circuit board, wherein a movable portion of the elastic element is connected to a second sensing electrode;
• and
• a key cap movably disposed on the elastic element, wherein the elastic element enables the key cap to move between an unpressed position and a pressed position, and the movable portion drives the second sensing electrode to move relative to the first sensing electrode without contacting the first sensing electrode;
• a processing circuit electrically connected to the mechanical key components, wherein the processing circuit is configured to perform following processes:
• providing a first sensing signal to at least one of the first sensing electrode and the second sensing electrode;
• obtaining a coupling capacitance generated between the first sensing electrode and the second sensing electrode;
• and
• detecting, in response to the key cap being moved between the unpressed position and the pressed position, a change in the coupling capacitance to indicate whether the key cap is in the unpressed position or the pressed position;
• wherein, in response to the key cap moving between the unpressed position and the pressed position along a first direction, the movable portion drives the second sensing electrode to move relative to the first sensing electrode along a second direction, the second direction is parallel to a surface of the circuit board, and the first direction is perpendicular to the second direction.