What are the different types of external computer memory? What are the advantages and disadvantages

Optical discs, floppy disks, and hard disks all belong to external memory, and uncommon ones such as tape drives belong to external memory.

Comparison of external memory and memory.

The advantage is that the data is retained after the power is off, and the data is all gone after the memory is powered off, which is why you don't save the word document and all the content you entered after the power is off!

The disadvantage is that the speed of external memory is slower than the speed of memory, so the computer needs to call the data to be processed from the external memory to the memory for data calculation, and write the results of the operation to the external memory for permanent storage.

CD-ROM (optical drive) and RAM (memory).

ROM can read and cannot be written, while RAM can read and write.

A computer's memory is made up of two parts – the inner memory and the outer memory. The most prominent feature of internal memory is that the access speed is fast, but the capacity is small and expensive; The external memory is characterized by large capacity and low capacity, but the access speed is not high, the external memory does not directly participate in the operation of the computer, it stores the programs and data that the CPU does not currently use, and the external memory can only provide programs and data to the CPU through the internal memory. External memory includes floppy disks, optical discs, hard disks, flash disks, etc.

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Difference Between Memory and External Memory:

1. The two are different in nature

External memory refers to storage other than computer memory and CPU cache, which can generally hold data even after a power failure. Common external memory includes hard disks, floppy disks, optical discs, U disks, etc.

Memory refers to one of the important components of a computer, which is the bridge to communicate with the CPU. The running of all programs in the computer takes place in memory, so the performance of the memory has a very large impact on the computer.

2. The two are different in the storage of information

After the computer finishes performing the job, the memory is a storage device that does not need to store any information. Therefore, if there is no information in the memory, it is impossible to find the required content in the memory. It is not possible to save on a memory module.

The saved information can only be saved on external memory such as USB flash drives, floppy disks, etc. At the same time, the external memory capacity is large and easy to carry, so you can find the storage information you want at any time.

3. The running speed of the two is different:

The external memory is able to store data for a long time, and the exchange of Speeda Shendu is relatively slow, while the exchange speed of memory is very fast, but it does not save files permanently, and the files disappear when the power is off.

Memory is only used as a temporary storage device, a temporary storage memory device when computing data or executing programs. In daily life, it is not suitable for long-term storage devices, so the use time is limited.

The memory in a computer can be roughly divided into two categories: one is the main memory, that is, memory; One is auxiliary storage, that is, external storage.

Yes, computer memory can be divided into two categories: memory and external memory.

Memory is the device in a computer that stores data and instructions. Memory usually refers to the memory of a running computer that can be read and written at any time, and can quickly load data or instructions when the processor needs it. Memory, or cavity, is usually the fastest memory in a computer, but it is also very resource-intensive in the computer because it requires the intervention of the processor every time it reads or writes to memory.

Storage is a device used in a computer to store data and instructions, and it usually refers to storage devices such as hard disks, flash memory, optical discs, etc. Unlike memory, external memory cannot be read or written at any time, and the storage and reading of data requires processor intervention. External memory is usually slower than memory, but the storage capacity is usually larger than memory.

In computers, memory is usually used to store running programs and data, while external memory is used to store data and programs that are stored for a long time. When a computer needs to access data or programs, it first accesses memory, and if there is no data or programs in memory, it accesses external memory.

The differentiation function helps to reduce the volume and facilitate inspection and maintenance.

Memory features: Memory, also known as main memory, is a storage space that can be directly addressed by the CPU, and is made of semiconductor materials. Memory is characterized by fast access rates. It is the main component in the computer and is used to temporarily store the computing data in the CPU.

External memory features: The external memory is characterized by large capacity, low capacity, but slow access speed, and the external memory is used to store programs and data that are not used temporarily. There is often a frequent exchange of information between the inner and outer memory.

1. Running speed.

The most notable feature of internal memory is fast access and slow access to external storage.

2. Capacity. The internal memory capacity is small, and the external memory capacity is large.

3. Storage time.

When the internal memory is turned off, the data will be cleared, but the data from the external memory will not be lost.

4、**。Internal memory is expensive, whereas external memory is cheap and affordable.

Introduction to internal memory: Internal memory is referred to as memory, which generally refers to the memory module inserted on the computer motherboard, and internal memory can be divided into read-only memory (ROM) and random access memory (RAM). Internal memory features:

The internal memory stores information at a very fast rate, but the storage capacity is relatively small. Internal memory refers to RAM, memory is staggered; The read and write speed is extremely fast, the capacity is small, and the information is lost after a power failure. Introduction to External Memory:

External memory includes floppy disks, hard disks, optical discs, etc., and the corresponding drives are also called external storage, and some memories and storage media are made together, such as hard disks, U disks, etc. External memory features: External memory is characterized by large capacity and low capacity, but slow access speed.

External memory is also an input and output device, which can only exchange information with internal memory and cannot be directly accessed by other parts of the computer system.

Answer]: C memory is the memory part of the computer, which is used to store programs and data. Memory is divided into two categories: internal memory and external memory.

The external memory is used to store the programs and data that are not used for the time being, and the external memory capacity is much larger than the memory, and the speed at which it accesses information is slower than the memory. However, the external memory is not afraid of power outages, and the information on the disk can be stored for several years, and the storage capacity is not limited by a variety of memory like memory, and it is more convenient to dismantle and bury. Therefore, C.

External memory has the following advantages over memory:

1.More capacity. Memory typically has only a few hundred megabytes to a few gigabytes of storage space, while external memory capacities range from a few gigabytes to a few terabytes.

2.Persistence. Memory is temporary memory, and when the computer loses power, all the data stored in the memory is lost. The external memory can store data for a long time, and even if there is a power outage and other problems, it will not affect the storage of data.

3.Mobility. External memory is usually smaller and lighter, making it easy to carry. Users can plug it into a different computer or device at any time and access the data in it.

4.Data backup. External memory can be used for the purpose of data backup. Users can copy important data to external storage to prevent computer failure or data loss.

In short, external memory has a larger storage capacity than memory, higher durability, and is easy to carry and back up data. However, the read and write speed of external memory is slower relative to memory, and performance bottlenecks can occur when processing large amounts of data.