- #1
lampshade
- 17
- 0
something has always bothered me about nand flip flops and their use in memory so I thought I would ask this here and get it cleared up.
In a basic nand flip flop like the one found here:
http://hyperphysics.phy-astr.gsu.edu/hbase/electronic/nandlatch.html#c1"
I understand that there is a stable state Q=1 and Q' = 0, but what I don't get is how this helps in flash memory.
Once I say pull a usb flash drive out of the computer, it has no more electricity so how can S or R remain 1? In my mind I see the lack of electricity as being a 0 S input and a 0 R input that would put the latch into its invalid state.
What is the tiny key thing that I am missing to make sense of this?? This has been bugging me all day
Big thanks in advance,
lampshade
In a basic nand flip flop like the one found here:
http://hyperphysics.phy-astr.gsu.edu/hbase/electronic/nandlatch.html#c1"
I understand that there is a stable state Q=1 and Q' = 0, but what I don't get is how this helps in flash memory.
Once I say pull a usb flash drive out of the computer, it has no more electricity so how can S or R remain 1? In my mind I see the lack of electricity as being a 0 S input and a 0 R input that would put the latch into its invalid state.
What is the tiny key thing that I am missing to make sense of this?? This has been bugging me all day
Big thanks in advance,
lampshade
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