I am working on an Engineer project about Digital clock I research my project on the Digital Clock, but i could not find any webcite that has the answer to these questions

Question

1. What your part is and how it works?
2. Companies that make this kind of equipment/material/device/system.
3. What might an engineer do at a company like this.
4. What materials are used to make the part in question
5. How the equipment is tested for quality before shipment
6. List companies in this business and indicate if they interview at Cal Poly for engineering majors.