拨码开关，也叫指拨开关，就是一款能用手拨动的微型的开关， 是由日本研发出来的，随着电路板的演变，拨码开关也越来越精巧。

小小的开关也蕴含着科技含量，拨码开关采用的是0/1的二进制编码原理，通过控制电路的通断来实现对编码功能的选择、选项、选址，每一个键对应的背面上下各有两个引脚，拨至ON一侧，这下面两个引脚接通；反之则断开。这四个键是独立的，相互没有关联，通常用在数据处理、通信、遥控和安防系统、风淋室、火车模型等需要手动程式编制的产品上。

拨码开关很多款型号，细分下来有很多种分类方式，按照脚位来区分有直插式（DIP) 和贴片式（SMD），按照拨动的方式来分有平拨跟侧拨，按照脚间距有2.54mm和1.27mm脚间距，按照颜色有黑色，红色，蓝色，按照状态来说有两态跟三态，按照位数来说正常是都是1-10位、12位等11个位数。大部分拨码开关采用直插式（DIP），在两态之间变换，再根据不同的位组成2的N次方的不同状态，实现不同的功能。

对于拨码开关的选择，一定要保证稳定性，拨码开关的稳定性直接关系到系统的稳定运行，其次要保证高精密度，这就关系到拨码开关的线路板的镀层，如果线路板容易被氧化，就会造成精密度受损。

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A DIP switch is a manual electric switch that is packaged with others in a group in a standard dual in-line package (DIP). The term may refer to each individual switch, or to the unit as a whole. This type of switch is designed to be used on a printed circuit board along with other electronic components and is commonly used to customize the behavior of an electronic device for specific situations.

DIP switches are an alternative to jumper blocks. Their main advantages are that they are quicker to change and there are no parts to lose.

There are many different kinds of DIP switches. Some of the most common are the rotary, slide, and rocker types.

For the selection of the DIP switch, first,the stability must be guaranteed,the stability of the DIP switch is directly related to the stable operation of the system,second,to ensure high precision density, this relates to the plating of the circuit board,if the circuit board is easily oxidized, the precision is damaged.

China DIP switch please identify the XKB brand,XKB manufacturer XKB technology company focuses on switch details r&d and design, integrates the latest global technology trends, and strives to create high-quality and durable XKB brand products in the industry.

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