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This study aims to analyze the effectiveness of the implementation of blended learning in digital electronics courses to improve learning outcomes. This research is a descriptive analysis research. The subjects of this study were 48 students of physics education FKIP Lambung Mangkurat University. The effectiveness of the implementation of blended learning is viewed from the results of student cognitive learning, using learning outcomes tests. Data were analyzed in the following ways, (1) analyzing descriptively from the average results of the learning outcomes test, (2) analyzing by using paired t-test to describe the significance of differences in student learning outcomes, (3) analyzing with n-gain test to find out the level of effectiveness in improving student learning outcomes. The results showed that, the average of the pretest was 14.38 and the average of the posttest was 79.22. The sig-2-tailed result from paired t-test is less than 0.05 so there is a significant difference between pretest and posttest. N-gain score is 0.76 which means this has a high category. The conclusion is the implementation of blended learning in digital electronics courses is effective in improving student learning outcomes.