The personal laptop computer is a product that has proven to be very reliable in spite of the fact that it has many interfaces, is operated by a variety of people, operates nearly continuously, and includes a number of internal moving parts (e.g. hard disk, CD-ROM drive). It is a portable device that operates in a wide range of environments (temperature, shock, vibration, etc.). List six design features or characteristics that contribute to the laptop reliability. For each item in your list, estimate the contribution this item has on the overall computer cost. (A ranking of high, medium, and low is sufficient.)