ABSTRACT this paper analyses the importance of computer and smart phone and other application in the study of mechanical engineering. since the use of computer and other related electronic device has made a very great impact in mechanical engineering and the study of engineering as a whole. the big question still remain how it helped in the studies. IMPORTANCE OF COMPUTER, SMART PHONE AND OTHER APPLICATION IN THE STUDY OF MECHANICAL ENGINEERING mechanical engineers need to acquire particular skill and knowledge they need to understand the forces and the thermal environment that a product or its part or its subsystems will encounter.Mechanical is a diverse subject that it breadth from the need to design and manufacture everything from small individual parts and to large system.Example space craft and machine tools.on the other hand,computer is an advanced electronic device that takes raw data as input from the user and process these data under the control of set of instructions(called program) and gives the result(output) and save the output for future use.It is also an electronic device that manipulates information or data.While smart phone is a device that let you make telephone call,but also adds in feature that in the past you would have found only on a personal digital assistant or a computer.It is a mobile phone which offer advanced technology with functionality similar as a personal computer while offering a standardized platform for application developers . IMPORTANCE OF COMPUTER In the current world it's almost impossible to imagine that someone can live without computer but now computer have become an electronic device of almost every day for individual of every age. Computer in school will help the learner to comprehend the basic concept better with the help video or audio .Example computer in higher learning institutions will help the pro