Is what the user interacts with when operating a computer.

They can use a keyboard if booting into BSOS or typing in command prompt.

Mouse To move around and click on the tabs or whatever.

And the PC if needing to switch parts, repair, or see whats wrong with them

hi,

know what your user needs,

know what your competitors are doing,

go cheap, test cheap prototypes,

go through multiple iterations of the product,

set goals,

pre market your product,

scalable supply chain,

start telling everyone!

hope this !

1. b

2. c

3. b

4. a

5. b