What is the relationship between ROM RAM and memory, respectively

ROM, which is read-only memory.

RAM is a readable and writable device.

Memory belongs to RAM

Memory is divided into random storage jujube devices according to the working principle.

RAM), read-only memory.

rom), as well as caching.

cache）。

1. Read-only memory (ROM): When manufacturing ROM, information (data or programs) is stored and stored permanently. This information can only be read out, generally not written, and this data will not be lost even if the machine has a power outage.

ROMs are generally used to store the basic programs and data of a computer, such as BIOS ROMs. Its physical form factor is generally a double in-line (DIP) manifold.

2. RAM: It means that data can be read or written from it. When the power of the machine is turned off, the data stored in it is lost. Memory sticks.

SIMM) is a small piece of circuit board that brings together RAM manifolds and plugs them into a memory slot in a computer to reduce the space occupied by the RAM manifolds.

3. High-speed buffer memory.

Cache: Located between the CPU and memory, it is a memory that has a faster read and write speed than memory. When the CPU writes or reads data to memory, that data is also stored in the cache memory.

When the CPU needs the data again, the CPU reads the data from the cache memory instead of accessing the slower memory.

Generalized memory, which is functionally classified, is divided into three types: ROM, RAM, and cache; Memory in the narrow sense refers to the computer's memory module, which is RAM.

RAM, which is random access. In a computer, it is mainly a memory module, also known as main memory. Shut down and lose data when power is off.

Cache, which is a cache, is a particularly fast RAM, generally static RAM (the main memory is dynamic RAM), which is much faster than dynamic RAM, and is set to make up for the lack of speed in the main memory.

ROM, which is read-only memory. In the computer, it is mainly used in the BIOS. No data loss when powered off and power off.

Memory is a very important accessory for the computer, if the memory is too small, the computer will be more stuck, and the more programs run, the more obvious it is. In the same way, memory is equally important for today's smartphones, especially now that there are more and more large-scale games on mobile phones, so that there are special requirements for mobile phone memory.

Therefore, when we choose a new smartphone information, we need to pay special attention to the memory size of the phone. However, it can generally be seen that manufacturers and ** will give the parameters of smartphones, there are two easily confused memory names: RAM and ROM.

RAM, full name: Volatile Random Access Memory. To put it bluntly: the RAM of the phone is the running memory of the phone. The more RAM you have, the more programs your smartphone can run at the same time, which will also have some impact on the speed of your smartphone without lagging.

ROM,Full name:Read only memoryRead-only memory,ROM is usually a storage system information,A bit like the role of the system C disk in our computer,So we often hear on the forum that brushing ROM or something refers to the meaning of brushing the mobile phone system。 The ROM is not enough, it can be replenished with a memory card, don't care too much.

In other words: what we really care about is the RAM of our phones.

Optical discs and disks, they are bothExternal memory. An optical disc is not a ROM, and a disk is not RAM. (ROM, RAM internal memory).

According to your logic, apples are sweet fruits, so equivalently, sweet fruits are apples. (Apples have a sweet characteristic, but this characteristic is also present in other fruits.) ）

Read-only memory can only read data, not write data, and is not the same as only reading data, and it must be read-only memory that cannot write data. And the equivalent if a memory isInternal memory, can only read data, can not write data then it is read-only memory.

According to the storage medium, it can be divided into magnetic (optical disc), semiconductors, etc., according to whether the access is related to the address, it can be divided into ROM and RAM, which can be classified in a variety of ways, so I didn't figure out the classification problem, and the memory you said includes ram, rom, chche, it should be classified according to the role in the computer, so flash memory and auxiliary memory (including optical discs) should be added, as for what you said "memory belongs to RAM", I haven't heard it, Now it is said that memory is the main memory (including RAN and ROM), and it should be that RAM belongs to memory, which is reversed.

The first memory refers to the internal memory, the internal memory is relative to the external memory, including ram, rom, cache is right, and "memory belongs to RAM" in the "memory" is a common name, specifically referring to computer memory, or mobile phone memory chips, RAM should be the most widely used type of memory, it is not uncommon to use it to refer to it, from your question you can also see that you confuse computer memory and memory, computer memory is just a member of the huge memory family. Optical disc belongs to external memory, CD-ROM or ***-ROM is just ROM (Read Only Memory) English meaning, which is intended to show that this kind of disc is a kind of non-rewritable memory, and there is also a kind of CD-RW (Rewrite) that can burn discs.

My understanding is that the meaning of "memory" in the two sentences is different, and I believe that the locale of the two sentences is also different. The "memory" in the first word should be internal memory, which of course includes RAM, ROM, and cache; The "memory" in the second sentence refers specifically to the memory of the processor (CPU), which is RAM.

Memory is the ability to read data from it as well as write data. When the power of the machine is turned off, the data stored in it is lost. The memory module that we usually buy or upgrade is used as the memory of the computer, and the memory module (SIMM) is a small piece of circuit board that brings together the RAM integration blocks, which is plugged into the memory slot in the computer to reduce the space occupied by the RAM integration block.

Do you understand? The disc belongs to the ROM, that is, the data in the disc can only be read, not modified.

In the end, memory is divided into RAM, ROM, and a type of memory.

Memory is the basic component or circuit of any electronic device that needs to store information. Info quot0 gt; or quot1 quot is stored in a numeric format, also known as binary format. The electronic circuits used to store digital data or information are called memories, and the memory building blocks that store only one bit of data are called memory cells.

RAM and ROM are the two types of memory used in microcontrollers or computers. They are all used to store information, and they all belong to the category of main memory, that is, the memory accessed by the CPU of the trace shed.

RAM and ROM are two different types of memory that have different purposes, storage characteristics, capacity, and speed. Before going further into the differences between RAM and ROM, let's discuss them first.

What is RAM?

RAM is an acronym for Random Access Memory. It is a main memory that is used to store information about the current use of the CPU. This information can be data or programs being processed**.

It is a read-write memory, which means that it can store and access data almost simultaneously. But RAM is volatile or temporary memory, that is, its contents are erased when the power is off.

RAM is a type of fast access memory because it can store and access data randomly at any time, regardless of its physical location. It stores the necessary instructions needed to boot the device and the data that the processor is using. It increases the processing speed of the system by transferring data quickly between components.

There are two types of RAM: DRAM and SRAM.

What is ROM?

ROM, read-only memory, i.e. read-only memory is also a type of primary memory, but it is a permanent storage of data. It is non-volatile memory, i.e., its data content is not erased when the power supply is removed.

As the name suggests, it is read-only memory, which means that the data cannot be altered, but can be accessed any number of times. The CPU can only access the data, but it can't write the data. Or store the program ** in the ROM during the manufacturing process.

Although there are some modified versions of programmable read-only memory, such as PROM, EPROM and EEPROM, they can be reprogrammed hundreds of times using special equipment.

The ROM stores the necessary instructions or programs for the device that are required to boot the device**. The stored data cannot be directly accessed by the CPU, so the RAM is used to temporarily store the data before the CPU accesses it.

Main Differences Between RAM and ROM.

The table below shows the comparison between RAM and ROM.

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There are models of computer memory, ROM, and RAM.

The differences between ROM and RAM are as follows:

1. Different storage methods:

RAM is stored randomly, which can be read and written randomly, and data will not be saved when shutting down or restarting; The ROM is the storage capacity of the mobile phone, that is, the read-only memory, which can store various software and user files, and shutting down or restarting will not have any impact on the data.

2. The running speed is different

RAM, as a random storage technology, runs much faster than ROM.

3. The storage capacity is different

RAM capacity is generally relatively small, and most mobile phones are now 3GB, 4GB, and 6GB. The capacity of ROM was 8GB and 16GB at the beginning, but with the increasing demand for people's use, most of the ROM capacity of mobile phones, that is, mobile phone memory, started at 32GB, and there were many 64GB, and there were some ultra-large capacity of 128GB and 256GB.

4. The impact on the running speed of mobile phone software is different

RAM is an important factor that supports the operation of mobile phone software, and its size will affect the running speed of the mobile phone; The ROM allows the user to store files, and the impact on the speed of the phone is negligible, almost none.

Encyclopedia – ROM

Encyclopedia – ram