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The information in the RAM will be lost after the power is off, but the data of the ROM will not be lost.
Random access memory.
Random Access Memory (RAM), also known as "random access memory", is a memory that can be removed or stored at will as needed, and the speed of access is independent of the location of the storage cell. This type of memory loses its contents when the power is off, so it is mainly used to store programs that are used for a short period of time.
According to the working principle of the memory unit, random access memory is further divided into static random memory.
English: Static RAM, SRAM) and Dynamic RAM (DRAM).
ROMs are read-only memory.
read-only memory) is a solid-state semiconductor memory that can only read out previously stored data. It is characterized by the fact that once the information is stored, it cannot be changed or deleted. It is usually used in electronic or computer systems that do not require frequent data changes.
and the data will not disappear due to power off.
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ROMs don't, because ROMs are usually magnetic or thin-film media, and if they are flash or EEPROM solid-state storage (such as USB flash drives), these storage media do not rely on electricity to store information. If it is RAM, the information will be gone after the power is off, and the information in it is mainly maintained by the electric charge.
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ROMs are read-only memory, and you can't write anything to them under normal circumstances. For example, CD ROMs, BIOS chips. Pros: Memory when power off, ** cheap. Cons: It's cumbersome to write.
RAM is random access memory and is readable and writable. Pros: Access tends to be fast. Disadvantages: high cost, small capacity, data volatility.
Floppy disks and hard disks belong to external memory, which can be read and written, and can be memorized with electricity. Floppy disks are now obsolete, and there is no need to discuss cost, capacity, speed, or stability. The hard disk capacity is large, and the current standard configuration is 160G.
The answer is RAM
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RAM that the ROM doesn't lose will be lost.
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ROMs are read-only memory, such as CD ROMs, BIOS chips. Power-off memory, ** cheap. It's a hassle to write.
RAM is random access memory and is readable and writable. Access tends to be fast. High cost, small capacity, data volatility.
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rom: will not be lost.
Compared with RAM and ROM, the biggest difference between the two is that the data saved on RAM will disappear automatically after power failure, while ROM will not disappear automatically and can be saved after a long power failure.
RAM cannot retain data when the power is off. If data needs to be saved, it must be written to a long-term storage device (e.g. a hard disk).
ROM is an abbreviation for Read-Only Memory, which is a type of solid-state semiconductor memory that can only read out previously stored data. It is characterized by the fact that once the information is stored, it cannot be changed or deleted. It is usually used in electronic or computer systems that do not require frequent changes to the data, and the data will not be lost due to power shutdown.
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rom: read only memory. Information is not lost after power failure, such as the BIOS chip used to boot the computer.
Access speeds are low, (compared to RAM) and cannot be rewritten. Because it can't rewrite the information and can't be upgraded, it's rarely used nowadays.
ROM and RAM are the two models of memory inside a computer:
The ROM table is a read-only memory, that is, it can only read out the information, can not write the information, the information in it is still saved after the computer is turned off the power, and it is generally used to store fixed system software and fonts.
RAM represents the read-write memory, which can be used by any storage unit for read or write operations, the information in it will not be saved after the computer is turned off the power, and it needs to be reloaded when it is turned on again, usually used to store and operate the burning system, various running software, input and output data, intermediate results and exchange information with external memory, etc., we often say that the main leather chain of memory refers to RAM.
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The data stored in RAM is completely lost after a power outage.
Random Access Memory (RAM) can both store and read information to and from a specified unit; Any information stored in RAM is lost when power is off, so RAM is volatile memory.
Features of RAM and its differences from ROMs
It can be read and written at any time (except when refreshed), and it is fast, often serving as a temporary data store for the operating system or other running programs. When RAM is working, information can be written (deposited) or read (withdrawn) from any specified address at any time.
The biggest difference between RAM and ROM is the volatility of the data, i.e. the data stored in the event of a power outage will be lost. RAM is used in computers and digital systems to temporarily store programs, data, and intermediate results.
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