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Anonymous users2024-02-11I think you can clean up this software, because at this time, you can directly clean up the memory. Here are some of the inconsequential, encyclopedia!!
A memory that allows a cell anywhere in the array to quickly write and read data out in a random order. It is where the computer holds the operating system, applications, and user data, and unlike a hard disk or other storage device, it allows the processor to get the data more quickly, but all the data stored in the RAM is lost when the computer is shut down. When the user turns it on again, the computer will automatically reload the operating system and other files (usually from the hard disk) into a human-like short-term memory, which resembles a person's long-term memory.
Short-term memory is aimed at the current work and can store many data at the same time. Long-term memory can be short-term memory and needs to be refreshed. It has the following characteristics:
Random access. "Random access" means that when a message is read or written in memory, the amount of time it takes is independent of where the message is located. In contrast, there are serial-access memories that include sequential-access memory (e.g., tape) and direct access memory (e.g., disk).
Volatile. RAM cannot retain data when the power is off. If data needs to be saved, it must be written to a long-term storage device (e.g. a hard disk).
The biggest difference between RAM and ROM is that the data saved on RAM will automatically disappear after a power failure, while ROM will not.
High access speed.
Modern RAM has the fastest write and read speeds of almost any access device, and the access latency is negligible compared to other storage devices that involve mechanical operations (e.g., hard disks, optical drives). But it's still not as fast as SRAM for CPU caching.
Modern RAM relies on capacitors to store data. When the capacitor is fully charged, it represents 1 (binary), and the uncharged capacitor represents 0. Since capacitors leak currents to a greater or lesser extent, if they are not treated with special treatment, the charge will gradually lose over time and cause data errors.
Refresh refers to recharging the capacitor to make up for lost charge. The reading of DRAM has the function of refreshing, but the general scheduled refresh does not need to do a complete reading, only need to make a column (row) selection of the chip, and the data of the whole column can be refreshed, and at the same time, all related memory chips can be selected in the same column at the same time, therefore, in a period of time, all columns are refreshed one by one, and the refresh of all memories can be completed. The need to refresh explains the volatile nature of random access memory.
Sensitive to static electricity.
Like other delicate integrated circuits, RAM is very sensitive to the electrostatic charge of the environment. Static electricity can interfere with the charge of the capacitors in the memory, causing data loss and even burning out the circuitry. Therefore, before touching the RAM, touch the metal ground with your hand.
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