The purpose of the study was fourfold: 1) to construct a computer-assisted-instruction (CAI) of Basic Thai for Business Communication at 2) to determine the efficiency of the CAI at 80/80; 3) to compare the student learning achievement of the CAI based on the pretest and posttest scores ; and 4) to determine the students’ satisfaction towards the CAI. The subjects of the study were the 30 first-year undergraduate students majoring in Finance and Marketing the Faculty of Business Administration at Rajamangala University of Technology Pranakorn in 2008. The instrument and procedures comprised 4 parts. Part one contains the 8 units of CAI of Basic Thai for Business Communication each consisting of examples an end-of-unit exercise and a 5-item-end-of-unit test to measure lesson efficiency. Part two is the try-out CAI to determine its efficiency based on the results of the three respective groups which were initially 6 students majoring in Accountancy then 10 students majoring in Accountancy and finally 30 students majoring in Accountancy from the Faculty of Business Administration. The data were analyzed in percentage and mean. Part three comprises the tests consisting of the 30-item pretest and posttest containing the shuffled pretest items to compare the student achievement. The learning achievement was determined by t-test. Part four is the 10-rating scale items to survey the students’ satisfaction towards the CAI. The data were interpreted in mean score.The results indicated as follows: 1) the CAI of Basic Thai for Business Communication can be effectively complemented to teaching and learning; 2) the efficiency indication of the CAI of Basic Thai for Business Communication was higher than the set criteria 80/80 at 84.58/87.44; 3) the posttest scores were significantly higher than the pretest scores at 0.05; 4) The students were extremely satisfied with the CAI of Basic Thai for Business Communication in all aspects at Σ x 4.37.

The purposes of the research were to create and efficiency validation of computer assisted for the courses of practiced to cutting sheet metals 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 find efficiency validation of computer assisted instruction focused on the records management for the standard 90 / 90 and analyze the student learning achievement after using computer assisted instruction. The samples were the 18 Bachelor of Business Administration Program in Management Rajamangala University of Technology Phra Nakhon. The researcher experimented by using pretest and then using the computer assisted instruction focus on the practiced to prepare office equipment in learning next the students did the posttest. After that the researcher calculated to find the computer assisted instruction efficiency and analyzed the students learning achievement after studying. The result revealed that the computer assisted instruction efficiency was efficient for standard 90 / 90. And after studying by using computer assisted instruction the students learning achievement increased significantly at 0.05.

The purposes of the research were to create and find efficiency validation of computer assisted instruction focused on the office automation practice for the standard 90 / 90 and analyze the student leaning achievement after using computer assisted instruction. The samples were the 17 Bachelor of Business Administration Program in Management Rajamangala University of Technology Phra Nakhon. The researcher experimented by using pretest and then using the computer assisted instruction focus on the practiced to prepare office equipment in learning next the students did the posttest. After that the researcher calculated to find the computer assisted instruction efficiency and analyzed the students learning achievement after studying. The result revealed that the computer assisted Instruction efficiency was efficient for standard 90 / 90. And after studying by using computer assisted instruction the students learning achievement increased significantly at 0.05.

The purposes of the research were to create and efficiency validation of computer assisted instruction focused on the practice to CNC Tuming of the standard 90 / 90 and analyse the student leaning achievement of the student after by using computer assisted instruction. The subjects in the study were 23 first year diploma students enrolled in Computer Numerical Control Rajamangala of Technology. North Bangkok Campus. 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 CNC 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 0.01 .