How does the keyboard work?

The working principle of the keyboard is: the keyboard defines a corresponding key value for each physical key, and then reports all inputs to the control software, and the software determines the corresponding output.

1. The working principle of mechanical keyboard is: Mechanical keyboard is the earliest structure adopted. It is generally similar to the principle of metal contact switch to make the contacts conduct On or off, it has the characteristics of simple process, convenient maintenance, average feel, loud noise, and easy wear. Most cheap mechanical keyboards use copper leaf springs as elastic materials. Copper sheets are easy to break and lose elasticity, and may malfunction over time. rate increases.

2. The working principle of the membrane keyboard is: a double-layered film with silver powder lines sandwiched in the middle. There will be a carbon core contact at the position corresponding to the film and the key. After pressing the key, When the carbon core contacts specific silver powder wires, different signals will be generated; just like the keys on a mechanical keyboard, each key can send out a different signal.

Extended information

Features of the keyboard

The keyboard is used to enter text into a text editor, text processor or other text tool. Today's computers leave the job of interpreting key-value conversions to software. The keyboard defines corresponding key values ​​for each physical key, and then reports all inputs to the control software, which determines the corresponding output.

The fully-encoded keyboard is a keyboard recognition function completed by hardware. It identifies whether a key is pressed and the position of the pressed key, and the fully-encoded circuit generates a corresponding encoding information (such as ASCII code).

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