Let's get the right answers here. Tell what textbook or class this came from. I've worked in the industry a long time and these parts have moved around over the years. For example on the GE-210 memory was external in another rack. Today it could be part of a "System On a Chip" or SOC.
So with the wide variety of machines out there over the decades, the correct answer can change.
Someone who can help me to connect each hardware device with the categories, the device belongs to?
Memory: I / O device? Storage device? External device?
Display: I / O device? Storage device? External device?
Network card: I / O device? Storage device? External device?
Hard disk: I / O device? Storage device? External device?
CD: I / O device? Storage device? External device?
Processor: I / O device? Storage device? External device?

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