EE 109 - Spring 2022 Thermometer Review Question 1 (Cost Analysis): Assume we are building 1000 units of this system. Use the provided part numbers (see the webpage) and the digikey.com or jameco.com website to find the total **cost per unit** (again assume we build a quantity of 1000 units) for these thermometers. Itemize the part costs (list each part and its unit cost when bought in units of 1000) and then show the final cost per unit below. Note: You only need to price the components used in the project (not all the components in your lab kit. Also, you do not need to account for the cost of the circuit board or wires. In a real environment we would manufacture a PCB (Printed Circuit Board). As an optional task, you can search online for PCB manufacturers and what the costs and options are in creating a PCB. Review Question 2 (Health/Safety/Reliability) Assume this system was to be sold to consumers for use at their home. Considering reliability, health, and safety... - What scenarios might you suggest testing (considering both HW and SW) before releasing the product for use? - How might you make your design more reliable? By reliability we don't just mean keeping it running correctly (though you should consider that), but also how you can detect that a connected component has failed to gracefully handle such situations. You can consider both HW and SW points of failure, issues related to the operational environment, etc. and how to mitigate those cases.