There is an online marking system for computer marking. This online marking system refers to a modern computer system that relies on computer network technology and electronic scanning technology to realize automatic marking of objective questions and online marking of subjective questions. Examination is an important means of educational measurement. In order to make the measurement results truly reflect the teaching situation, an objective and fair measurement method is an important prerequisite. Today, examination is still an important means to select talents. Whether the evaluation of test scores is objective and fair will affect talents, and the quality of selection will even affect the future and destiny of everyone involved in the selection. The fairness of marking papers based on the above reasons is not only very important, but also related to the effectiveness of various exams, even success or failure. The function of automatically shielding candidates' information and ensuring the fairness and objectivity of the marking process can fully meet this demand. In the information age, with the rapid development of society and science and technology. On the one hand, the rich teaching content increases students' learning tasks, on the other hand, the workload of teachers increases, especially in today's exam-oriented education, which has not changed. Reducing teachers' burden involves factors such as the reform of education system and teaching content. This is a systematic project. But it liberates teachers from the heavy examination marking and statistical analysis. And effectively ensuring the quality of marking is not an effective means to reduce the burden on teachers under the existing conditions. Online marking has therefore become a harsh requirement for teachers, because it can improve work efficiency by three to five times.

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