The cutting tool that has a zig zag edge is called “Pinking shears “
Since there was no internet back then, life was hard, the buyers had to pay more money, and it was very difficult. Nowadays it's different. People could just stay home go on the internet and choose a car, then the next day or a few more days, there car is right in their parking lot. Hoped this helps! :)
The term to describe storage systems that function at high speeds is primary memory.