software engineering is the process of of developing a application(software) it ia considered only with the lifecycle of development of the application. which can be dine using any computer...
A software engineer works on software, while a system engineer will just work on the system. They are different because the system could be the BIOS, operating system, hard drive, memory, and other...
Software Engineering is a part of IT courses. IT (information technology) is very wast area and there are a lot courses for various technology segment.