Based this units readings, while many computer systems come pre$-$configured and pre$-$installed the IT technician needs to understand the different parts of the system and how they all work together. The chapter discusses computer design and how the different sub$-$systems interact with one another. Tell us what the difference is between a pre$-$configured system and one you have to design from scratch. What types of questions might you ask the person you are building the computer for and what recommendations would you give them.