Set $2$ Video Clip: Vintage Hardware: https:$//$youtu$.$be$/$qSsry$\_$PoI$9$w

Watch the video and answer the following questions.

i$.$ How did the IBM $407$ Accounting Machine patch panel operate?

ii$.$ How did the fixed$-$head hard drive operate? What was its total memory capacity?

iii. How did the core memory hard drive operate? What was its total memory capacity?

iv$.$ When was the first floppy disk invented? By whom? What was it used for?