第一代是插卡式考勤机，70年代，逐渐代替了手工记录考勤，他是在一个金属制成的卡片上有规律的打上孔，然后用感光元件和光投影区别人的编号，8086处理器或者80286处理器。但金属片容易变形，造成了识别的误差.再加上分辨率的限制，这种考勤机在动辄几千人的煤矿中没有普遍推广。
The first generation is the card-type attendance machine. In the 1970s, it gradually replaced the manual record of attendance. He punched regular holes in a metal card, and then distinguished the number of people with the photosensitive elements and light projection, 8086 processor or 80286 processor. But the metal sheet is easy to deform, resulting in recognition error. In addition to the limitation of resolution, this kind of attendance machine has not been widely used in coal mines with thousands of people.
第二代是条形码考勤机，在矿灯的光柱中利用光学原理投影出一个条形码的像，工人下井前用矿灯照射一下专门的考勤探头就可以考勤。这种方式方便快捷，我国最早下井用的就是这样的考勤机。但是矿灯毕竟是一种经常工作在恶劣环境中的器械，所以维修频繁，投影的走样是捆扰大家的一个难题.。
The second generation is the bar code attendance machine, which uses optical principle to project a bar code image in the pillar of the miner's lamp. Workers can attend the work by illuminating a special attendance probe with the miner's lamp before they go down the well. This way is convenient and fast. The earliest time machine used in our country is the attendance machine. But after all, the miner's lamp is a kind of equipment which often works in harsh environment, so frequent maintenance and projection aliasing are a difficult problem for us.
第三代是磁卡型考勤机，现在最为普遍的考勤机，像煤矿工人下井刷卡上井刷卡已经成了大家的习惯
The third generation is the magnetic card type attendance machine. Now the most common attendance machine, such as the coal miners, has become a habit for them to swipe their cards when they go down the well.
第四代是生物身份识考勤机，是利用人的生物特征来识别的，这种考勤机只要人的一个手指、手撑、人脸放在放在或面向读头就可以识别了非常方便而且可以防止代打卡现象，提高管理制度
The fourth generation is the biometrics attendance machine, which uses the biological characteristics of human beings to identify. It is very convenient to identify the attendance machine as long as one finger, hand brace, face is placed on or facing the reading head, and it can prevent the phenomenon of punching cards on behalf of others and improve the management system.
第五代是摄像考勤机、拍照考勤机，有效解决了生物识别对环境和使用人群的限制，智能卡管理和人工管理相结合，可有效适应于工厂、工矿企业等环境。是现如今使用最多的种类。
The fifth generation is the camera attendance machine and the camera attendance machine, which effectively solves the restrictions of biometric recognition on the environment and the use of people. The combination of smart card management and manual management can effectively adapt to the environment of factories, industrial and mining enterprises and so on. It is the most widely used type nowadays.
第六代智能云考勤机，与微信等移动互联网应用无缝连接，可以通过手机等移动端设备进行考勤管理，考勤打卡、考勤记录查询、考勤统计报告以及通过考勤机进行请假、加班等相关操作。
The sixth generation of Intelligent Cloud attendance machine is seamlessly connected with mobile Internet applications such as Wechat. It can manage attendance through mobile devices such as mobile phones, punch in attendance cards, check on attendance records, report on attendance statistics, and perform leave and overtime operations through attendance machines.