This study was conducted to identify the influence of computer technology in blended learning on the achievement in the Principles of Accounting subject through of self-directed learning. The research also assessed the relationship of the elements of blended learning on student achievement. Despite the encouragement by the Ministry of Education for the use of computer technology in education, there is a lack of research on a measurable and testable model of the influence of computer technology. In reality, various aspects such as schools, teachers, content, and technology exist to provide and utilize computer technology through learning in Malaysia. A quantitative study using a correlational design was conducted on 400 Form Four students in secondary schools in the Southern Zone of Malaysia, namely in the states of Johor, Melaka, and Negeri Sembilan, to identify the influence of computer technology in blended learning on achievement. Data were collected using adapted and modified questionnaires from previous studies. Descriptive data analysis was performed using SPSS version 28, while inferential analysis was conducted using the Smart PLS analysis technique. Smart PLS version 4.0 software was utilized to test the mediator relationships in the study. The results of the study showed high minimum scores for blended learning through computer technology and self-directed learning, as well as achievement. The influence of blended learning elements also had a significant relationship with student achievement in the Principles of Accounting subject. This study is expected to contribute to the effectiveness of blended learning through information technology on the achievement in the Principles of Accounting subject by enhancing selfdirected learning among students. The development of this conceptual model is hoped to serve as a guide for policymakers, the Ministry of Education, teachers, students, and other stakeholders in ensuring that blended learning practices can be implemented more effectively. Furthermore, it is hoped that the achievement and interest in the Principles of Accounting subject can be improved by applying computer technology in learning.