Consider a very simple RAM chip that has 20 address pins and 4 data pins. I would like to know the function of the 4 data pins when only 1 data pin is enough.
What do I mean by 1 data pin is enough? If an address is applied to address pins, a memory cell is selected (which can only have value 0 or 1 — in a very basic RAM). Isn't it counter-intuitive to send 0 bit using 4 data pins when 1 data pin is okay. So why would the RAM have 4 data pins in this case?
If it's a memory system that combines multiple RAM chips, I understand having multiple data pins but I don't understand it for a single RAM chip
NB: Something might be missing from my base understanding because I've been struggling to understand how 4 data pins are necessary.