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This article is to share with you about the characteristics of RAM random access memory in computers. The editor thinks it is very practical, so share it with you as a reference and follow the editor to have a look.

When the computer has a sudden power outage, all the data in the RAM random access memory will be lost; when the power is turned off, RAM can not retain the data; the working characteristic of RAM is that after power is turned on, the data information can be accessed at any location at any time, and the internal information also disappears after the power is cut off.

When the computer suddenly goes out of power, the data in RAM random access memory will be lost.

Memory is a device or component used to store a large amount of information in a digital system, and it is an important part of computers and digital devices. Memory can be divided into two categories: random access memory (RAM) and read-only memory (ROM).

Random access memory (RAM) can both store and read information from the designated unit. Any information stored in the RAM will be lost after a power outage, so the RAM is volatile memory.

ROM is a read-only memory, which not only stores data, tables and solidified programs, but also has a wide range of applications in combinational logic circuits.

Characteristics of RAM random access memory

1. Random access

The so-called "random access" means that when the data in the memory is read or written, the time required has nothing to do with the location where the information is located or where it is written. In contrast, when reading or writing sequential access (Sequential Access) to information in a storage device, the time required is related to the location. It is mainly used to store operating system, various applications, data and so on.

When RAM is working properly, you can read data from RAM or write data to RAM. Compared with ROM, RAM has the advantages of convenient reading / writing and flexible use, so it is especially suitable for frequent and rapid data change.

2. Volatility

RAM cannot retain data when the power is off. If you need to save data, you must write it to a long-term storage device (such as a hard disk).

The working characteristic of RAM is that after being powered on, the data information can be accessed at any location at any time, and the internal information also disappears after the power is cut off.

3. Sensitive to static electricity

Like other fine integrated circuits, random access memory is very sensitive to the electrostatic charge of the environment. Static electricity will interfere with the charge of the capacitor in the memory, cause data loss, and even burn out the circuit. Therefore, you should touch the metal ground with your hands before touching the random access memory.

4. Access speed

Modern random access memory has the fastest write and read speed of almost all access devices, and the access latency is negligible compared with other storage devices involved in mechanical operation.

5. Need to refresh (regenerate)

Modern random access memories rely on capacitors to store data. When the capacitor is fully charged, it represents 1 (binary), and the uncharged represents 0. As there is more or less leakage of capacitors, if not treated specially, the data will gradually be lost over time. Refresh refers to regularly reading the status of the capacitor, and then recharging the capacitor according to the original state to make up for the lost charge. The need for refresh explains the volatility of random access memory.

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