This research aims to know the influence of instructional media of computer information technology to learning achievement of marketing business management, the influence of using cash register to learning achievement of marketing business management, and the influence of instructional media of computer information technology and the use of cash register influence together to learning achievement of ten grader marketing students SMKN 1 Probolinggo. Eighty (80) students are involved as the

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... dents. Further, the results show that the use of instructional media o f computer information technology and cash register influence significantly to learning achievement of marketing business management and the use of both together influence significantly to learning achievement of ten grader marketing students SMKN 1 Probolinggo. Keywords: instructional media of computer information techno logy, cashier machine, learning achievement.