Problems with memory and memory sticks

1. Main memory includes ROM, RAM, cache
2.Cache is a small capacity memory between CPU and main memory

question:
1. In the second point, does main memory mean that RAM, which is commonly known as "br > 2.cache", only logically belongs to memory, but in physical implementation, it is between CPU and memory, that is to say, ROM, RAM and cache are independent of each other, just as external memory includes disks, floppy disks, etc.

Thank you all

Computer-composition computer-principle computer-basic operating-system c

Mar.01,2021

Yes, the memory bar in our pc thinks that the cache in the ram,cpu here can be understood as the cache here. (in fact, RAM sub-SRAM,DRAM,cache generally uses SRAM, and CPU to exchange data faster than DRAM, in manufacturing, so it is called 'cache')
is physically independent

take a look at the following two pictures (sg's picture upload function failed, you can only jump out to see it, tragedy, feedback to the staff)

https://gcsecomputing.org.uk/.
https://gcsecomputing.org.uk/.

Previous: Why does the lastInsertId of pdo always return 1?

Next: Questions about ggplot2 theme setting

MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1b35da2-2bfc2.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b35da2-2bfc2.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
Need Help?