The role of a computer-based instructional system is to deliver messages to learners. Those messages originated from a human tutor who developed the instruction. Computer systems do not understand these messages which comprise the instruction, student responses, and feedback during the learning process. A computer is merely a conduit for the exchange of messages between student and teacher. A computer system has no idea of the meanings of the messages.

A computer system is digital device which comprises of a hardware and a software components. The hardware is the physical parts of the system while the software is the written instructions that controls the hardware.

The computer is a part of the information system which also includes the procedure and user. It is used to communicate between users in a network with ease. The computer based instructional system is an information systems used in educational facilities. They help teachers pass across information to the students and provides a platform for student to share their resources and seek solutions where necessary.