Advantages and disadvantages of memory and hard disk

Memory and hard disk are common storage devices in computers, and they have their own advantages and disadvantages. This paper will discuss the advantages and disadvantages of memory and hard disk in depth to help readers better understand their characteristics.

quick

The advantage of memory is that it is fast and can be read and written instantly.

High cost

The disadvantage of memory is that the power-off data disappears and the cost is higher than that of hard disk.

high power

The advantage of hard disk lies in its large capacity and low cost. The data still exists after the power failure.

low speed

The disadvantage of hard disk is that reading and storing data is much slower than memory. And because of physical exercise, the life span is only 4 to 5 years.

Buffer function

Memory acts as a buffer between CPU and hard disk. Generally speaking, memory is equivalent to desktop and hard disk is equivalent to drawer. The bigger the desktop (the larger the memory), the more things you can put, and you can get them quickly and easily, so the work efficiency is high. The smaller the desktop (the smaller the memory), the less things can be put, and it takes time to open the drawer and find what you want. So the more memory, the better.