Is a hard drive just memory, right or wrong

That's a big deal! Both hard disk and memory have a common feature, which is to store data Memory: It is used to provide an active storage space for programs after the computer is turned on, and the data disappears after the power is off.

Hard disk: Keep data for a long time, and it will not be lost after shutting down. The price can also be seen:

There are more than 100 memory for 1G, and more than 400 hard disks for more than 300G.

d, the information in the memory is definitely gone, similar to what you have in the clipboard, and it must be gone after restarting. Also, if you change to the current SSD, or flash in the tablet, you are not in the right question. It can be seen that it is also the exam question in middle school.

Of course, choose D, the memory uses capacitor access, and it needs to be constantly refreshed to keep the data, except for the memory power supply when entering S3 (sleep), and the memory will be powered off when it is shut down and hibernated, and the capacitor cannot keep the data after the memory is powered off.

The hard disk uses disk access, and the data does not disappear when the power is off.

d. Memory information is not retained after power failure.

The answer is – b.

Alas, that's right. Memory and hard disk are both storage devices, but memory works by means that data does not reside, overflow replaces.

B, is wrong. 16g inner pure and hard disk that is big?

c, that's right. Even SSDs can't compare to memory at the moment.

D, that's right. This answer is in the reverberation audio-visual, after the power is off, the information in the memory and the hard disk are retained, the memory is not empty after the power is off, but when the computer is restarted, the data in the memory is changed, the speed of reading and writing data in the memory is very fast, but even if it is fast, the information is also saved in the memory.

To give a simple example, the Windows system, whether it is XP, or Win7, will have a process of sorting out data when it is illegally shut down and restarted, in fact, this process is to write some data in memory to the hard disk, so, D's statement is correct.

d is wrong. The memory is RAM, and no data is saved when the power is off.

If it is not multiple choice, the answer is definitely D. b is only a general statement, but generally speaking, hard drives have a larger capacity than memory. You don't have to stick to these words. No one is going to make a 1g hard disk.

Some people can't even figure out what memory is, and they still answer blindly. RAM (RAMDOM Access Memory) is a type of random read-write memory. Constant charging and discharging is required to save data.

The profession is called pre-charge. Search the Internet to find out. For example, if the system goes to sleep, the memory must be powered.

At this time, the memory cannot be plugged and unplugged. Because there is data stored in it. If you power it off, it won't be able to remember the data.

A hard drive is not memory.

Hard disk is one of the main storage media of a computer, consisting of one or more aluminum or glass discs. The disc is covered with a ferromagnetic material.

Hard disks include solid-state drives (SSD disks, modern hard disks), mechanical hard disks (HDD traditional hard disks), and hybrid hard disks (HHD is a new hard disk born based on traditional mechanical hard disks). SSD uses flash memory particles for storage, HDD uses magnetic disks for storage, and hybrid hard disk (HHD) is a kind of hard disk that integrates magnetic hard disk and flash memory.

The vast majority of hard drives are fixed hard drives that are permanently sealed and fixed in the hard drive.

Memory is one of the most important components of a computer, and it is the bridge that communicates 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. Memory, also known as internal memory, is used to temporarily store computing data in the CPU and exchange data with external memory such as hard disks.

As long as the computer is running, the CPU will transfer the data that needs to be calculated to the memory for calculation, and when the operation is completed, the CPU will send the result out, and the operation of the memory also determines the stable operation of the computer. Memory is made up of parts such as memory chips, circuit boards, gold fingers, etc.

CPU is a core controller, combinator, mainly responsible for computing and executing instructions, and now CPU also has the function of memory control.

Memory is mainly used to store the data and instructions of the running operating system and programs. Hours of in-memory data after a power outage.

Hard disk, a storage medium for long-term storage of data, can store data for a long time, generally for magnetic storage.

Graphics cards, which are used to calculate the image displayed on the screen, now the graphics card GPU can replace the CPU for floating-point arithmetic.

Motherboard, all hardware is basically plugged in. The motherboard BIOS is a small system that checks each hardware at boot time according to the BIOS settings and boots the operating system at the same time.

The operating system has virtual memory, which can use the hard disk as memory, put the data in the memory that is not commonly used in the virtual memory, and read the physical memory when it needs to be called, thereby expanding the memory and improving efficiency. However, the read speed of virtual memory is very low, and the system will need to put some data that is not used or not used at all into virtual memory. It is recommended not to use any memory freeing tools, which will cause unnecessary freezes, program errors, some programs running slowly, etc.

Generally speaking, shutting down the computer once is much more effective than cleaning up the memory.

It works like the memory in your phone, and the larger its capacity, the more things it can store. At present, the mainstream capacity is 500G, 640G, 1T, and so on.

Memory: This is where the CPU is cached for pending data. We know that the data to be processed by the CPU is called from the hard disk, but the speed of the hard disk is too slow, and many times the CPU has to wait for it to read slowly, which seriously drags down the execution efficiency of the computer.

The hard disk puts the preprocessed data into memory in advance, and when the CPU wants to call the data, it can read it directly from the memory, thus improving the efficiency of the CPU calling data. The larger the memory capacity, the more data can be cached, which can reduce the number of times the CPU can call data to the hard disk, which indirectly improves the operation efficiency of the computer. Therefore, in old computers with small memory, we will find that the hard disk is often in a state of crazy rotation, and the computer is very inefficient.

Because computer memory has the same name as mobile phone memory, many beginners often confuse memory with hard disk, which should be noted that the computer's memory cannot store data after power failure.

At present, the mainstream capacity of memory is 2G and 4G.

There is a difference, figuratively speaking. The hard drive is like your notes, you can record things, you can delete things, and your brain is equivalent to memory, which temporarily memorizes all kinds of data as you need, and then it all disappears (i.e., when the power is off). And what's on the hard drive is like your notes, and what you write down will always be in it, and it won't disappear until you erase it with an eraser.

Professionally: memory is random access memory or temporary memory. Whereas, a hard disk is read-write memory.

Memory is a place where memory that needs to be processed by the processor or has been processed is temporarily stored, and does not have long-term existence.

Usually, when the power is turned off, all the contents of the memory disappear immediately.

A hard drive is a device used to store data permanently. It can store data for a long time, but it doesn't have the speed of memory.

Just like the brain, there is a part of the memory area that is temporary, and a part of it is a permanent memory area. Temporarily memorize things in the zone that you may forget, but you remember quickly. What you remember forever, you remember more slowly, but you can never forget it.

My personal understanding is that memory is cache, and data is only stored temporarily, erased after a power failure. Hard disks are permanent storage