The non-impact keyboard is mainly related to the internal control logic of the keyboard, which has nothing to do with whether it is a mechanical keyboard, and the film keyboard has no impact design. The common principle of non-impact keyboard is to virtual a keyboard into N small keyboards to ensure that the keys of each small keyboard achieve no impact effect. Although this method can achieve full key no impulse, it is easy to have problems in some specific systems, and the key response speed will have an impact, and the key delay will occur.