The purposes of the research were to create computer assisted instruction for Electric Power System Analysis Chapter 1-2 to find out the efficiency validation of computer assisted instruction based on the standard of 90/90 and to analyse the students learning achievement after using the computer assisted instruction. The subjects in the study were 17 third-year diploma engineering students enrolling at Rajamangala University of Technology Phra Nakhon. The researcher made the experiment by having the students pretest. Then they studied by using the computer assisted instruction focused on practicing basic turning. After the students had studied and had posttest the efficiency of the computer assisted instruction was calculated as well as the learning achievement was analysed. The research result revealed that the efficiency of the computer assisted instruction was at the standard of 90 / 90. Moreover the learning achievement after using the computer assisted instruction was different at the significant level of 0.05.

The purposes of the research were to create? and efficiency validation of computer assisted for the courses of practiced to wooden joint based standard 90/90 and analyse the leaning achievement of the student after by using computer assisted instruction. The subjects in the study were 17 first year diploma students enrolled in Rajamangala University of Technology Phra Nakhon. The Researcher using the experiment by let the students do until test before class And then study by using computer assisted instruction focused on practiced to basic turning. After that let students do the unit test again at the class and calculate to find out the efficiency of the computer assisted instruction and analyse the leaning achievement of students after study. The research result revealed that the efficiency of the computer assisted Instruction was efficient in standard 90/90 Moreover after learning achievement At significant level of 0.05

The purposes of the research were to create and efficiency validation of computer assisted for the courses of practiced to basic file based standard 90/90 and analyse the leaning achievement of the student after by using computer assisted instruction. The subjects in the study were 17 first year diploma students enrolled in Rajamangala University of Technology Phra Nakhon. The Researcher using the experiment by let the students do until test before class And then study by using computer assisted instruction focused on practiced to basic turning. After that let students do the unit test again at the class and calculate to find out the efficiency of the computer assisted instruction and analyse the leaning achievement of students after study.

The purposes of the research were to create and efficiency validation of computer assisted for the Computer for Jewelry Design based standard 90/90 and analyse the leaning achievement ofthe student after by using computer assisted instruction. The subjects in the study were 17 first year diploma students enrolled in Rajamangala University of Technology Phra Nakhon. The Researcher using the experiment by let the students do until test before class And then study by using computer assisted Computer for Jewelry Design. After that let students do the unit test again at the class and calculate to fmd out the efficiency of the computer assisted instruction and analyse the leaning achievement of students after study . The research result revealed that the efficiency ofthe computer assisted Instruction was efficient in standard 90/90 Moreover after learning achievement At significant level of 0.05.

The purposes of this research were to create and evaluate the effectiveness of Computer Assisted Instruction about Tensile test The CAI consisted of 9 lessons The sample was 20 first year diploma students in Tool and die make Department Faculty of Production Technology. Rajamangala University of Technology Phra Nakhon. First of all the students did the pre-test and then they studied via CAI. After that they did the post-test. After using CAI the result was evaluated to find effectiveness and learning achievement was analyzed. The finding showed that CAI effectiveness reached the standard of 90/90 Further more the students knowleage increased at significant level of 0.01