What is the difference between computer hard disk and memory?

to tell you about the hard drive with the internal and the difference, in the computer play the role of what is respectively.

Hard disk and memory differences

When it comes to memory, many people easily confuse the memory of the computer with the memory card, in fact, the memory inside the computer and mobile phone running memory is the same, they are running memory.

It can also be said that the memory is the real memory of the computer, and the hard disk is the external storage of the computer, belonging to the memory equipment, not just the function of the Data warehouse. In addition to a small number of operating systems essential to the long memory of the program, we usually use the program, such as Windows, Linux and other system software, including typing software, game software, and other applications, although the program code including a large number of data are placed on tape, disk, CD-ROM, mobile disk and other external devices, But any data in the external memory can only be used if it is transferred into RAM.

Notebook hard disk with Desktop hard drive (2.5-inch notebook, desktop for 3.5-inch, laptop hard drive compatible with desktop on day)

Any type of input from the computer (from the external memory, keyboard, mouse, microphone, scanner, etc.) and any kind of output (display, print, audio and video, write to the external storage, and so on) can not be carried out, memory is the bridge between the program and the CPU.

Hard words are generally used to store data, the equivalent of the data warehouse, such as the system, are installed in the hard drive, you download the software and files are saved in the hard drive, and memory is not half a dime relationship.

Generally, if there is no memory, the computer will not display, if the hard drive is not installed, the computer can be shown, but can not enter the operating system, can only be displayed in the English interface. If the computer display in the English interface can not go, generally is related to the hard drive, or the hard drive is broken, or is installed in the hard drive inside the system is not; If the computer boot does not show, 80 of the relationship with the memory, a lot of memory is loose or rusty, there may be memory is bad. However, the computer boot does not appear or is not necessarily the problem of memory, such as CPU, motherboard, video card, power supply may be caused by the computer boot does not show.

SSD Solid State Drive

General computer memory is far smaller than the hard disk capacity, the current mainstream installed memory is 8GB, and the previous computer memory relatively small, early 128m,256m,512m,1g memory, now generally at least 4G memory, the largest single reached 16G. From Sdram,ddr, DDR2,DDR3, to the current fourth generation of DDR4 memory. and the hard disk capacity is larger, the current market mechanical hard disk size of more than 500G, and solid-state hard disk for more than 128G, the largest mechanical hard disk has reached more than 10 TB, SSD solid-state hard disk is now gradually popular, but the capacity is not comparable with the mechanical hard disk.