Chapter 3 Review Questions 1-18 (page 130)
1. When determining the appropriate hardware components of a new information system, what role must the user of the system play?
When determining the appropriate hardware components of a new information system, the user of the system must assemble an effective and efficient system. The user should select and organize components while understanding the trade-offs between overall system performance and cost, control, and complexity. The user involved in selecting their organization’s computer hardware must clearly understand current and future business requirements so they can make informed acquisition decisions.
2. What is the role of the chip set? How is it related to the CPU?
The chip set…show more content… 6. What advantages do fuel cells offer batteries for use in portable electronic devices? Do they have any disadvantages?
Fuel Cells generate electricity by consuming fuel (often methanol), while traditional batteries store electricity and release it through a chemical reaction. A spent fuel cell is replenished in moments by simply refilling its reservoir or by replacing the spent fuel cartridge with a fresh one.
Benefits of Fuel Cell:
Because there is no combustion in a fuel cell, fuel is converted to electricity more efficiently than any other electrical generating technology available today.
There are no moving parts in a fuel cell stack, making them more reliable and quieter than generators. Even the ancillary systems (fans, pumps, controls, etcetera) in a complete fuel cell unit are relatively mature and simple technologies that should prove extremely reliable.
Unlike batteries that must be disposed of once their chemicals are used up, fuel cell reactions do not degrade over time and can theoretically provide continuous electricity.
Traditional power plants must be large in order to gain efficiency, but fuel cells can achieve higher efficiencies at any scale, making them perfect for small portable, residential, and transportation uses.
Because fuel cells are clean and efficient at any size, they can be located almost anywhere, including dense urban areas where both air quality and