These days, the uselimplementation of computer in education is becoming increasinglyrnattractive. There is now a general understanding among workers in this area that thernapplication of computers in education can be categorized as TUTOR (CAl), TOOL andrnTUTEE . The TUTOR application (which is the subject of concern here) in particular,rnrelates to the use of computers as educational delivery systems where as the TOOL andrnTUTEE applications refers to the use of computer for performing certain tasks and forrnprogramming respectively .rnA typical CAl/TUTOR system consists of a COURSEWARE (a specially designedrnsoftware for classroom instructional use), along with the hardware and system softwarernrequired to run such software.rnAs with any other software, courseware development requires analysis of the requirementsrnfirst, in particular, answer to such basic questions as When to use a courseware? how torndesign ( develop) a user friendly courseware and what factors to consider in the designrnof such a courseware.rnThis study attempts to address these questions by way of demonstrating the design andrndevelopment of a user friendly courseware using the available resources at SISA. Arnliterature survey of definitions, types and design considerations of a courseware along withrnthe main reasons behind the use and current development trends is presented. Among therndevelopment models suggested for the use in developing a courseware, the ISD model isrndescribed in great detail. The design and development of a microcomputer based prototyperncourseware: Inventory Management Courseware (IMC), using the ISD model and turbornvision programming language on the basis of a course under offering at the Addis AbabarnCommercial College-Addis Ababa-Ethiopia (work place of the worker) is described atrnlength.rnThe result of the study indicates:rn1. Use of ISD model together with other tools and techniques lead to the developmentrnof a user friendly courseware within a reasonable period of time .rn2. The possibility/feasibility of using high level programming languages such as TurbornVision to develop an acceptable qual ity courseware even in the absence ofrnspecialized authoring software.rn3. The team approach of designing a courseware, as it facilitate representing ofrndifferent expert opinions, exchanging of ideas and identification of problem areasrnthat might be missed otherwise results in producing a better quality courseware thanrnindividual based approach.