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First of all, the memory module is a hardware device for internal storage, and the role is first understood in the access process: the computer CPU processes data, not directly from the hard disk, but from the memory to access the data, the main reason is that the access speed is fast, that is to say, the data first arrives from the hard disk to the memory, and then the CPU accesses and processes the exchange from the memory. Because the memory is too high, and there is no memory function, the data will disappear as soon as the power fails, so the cheaper hard disk with memory function is used to store permanent data.
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A memory module is a channel that connects the CPU to other devices, serving as buffering and data exchange. When the CPU is working, it needs to read data from external memory such as hard disks, but because the "warehouse" of the hard disk is too large and it is also "far away" from the CPU, the speed of transporting "raw material" data is relatively slow, resulting in a great reduction in the productivity of the CPU! In order to solve this problem, people have built a "small warehouse" between the CPU and the external memory—memory.
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To put it simply, it is the role of your water pipes. No matter how much water there is in the reservoir. You're so thin with a pipe. The speed to your home is also slow. The water pipes are thick. Isn't it faster? 5824714602 you can try it.
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Memory is not just a data warehouse, any input (from external memory, keyboard, mouse, microphone, scanner, etc.) and any output (display, printing, audio, writing to external memory, etc.) on the computer can only be made through memory.
1. The memory module is a computer component that the CPU can address through the bus and perform read and write operations. Memory modules used to be an extension of the main memory in the history of personal computers. With the continuous update of computer software and hardware technology, memory modules have become the whole of read and write memory.
The size of a computer's RAM is the total capacity of a memory module.
2. The data written to RAM (i.e., read-write memory, i.e., memory module) will disappear completely after power failure, and the earliest program data read by the CPU when the computer is turned on comes from ROM (read-only memory). Memory is the basic component of computers (including microcontrollers), and memory has been available since the day computers were available.
3. Memory is an indispensable part of the computer, and the CPU can address the memory through the data bus. Historically, computer motherboards had main memory, and memory modules were extensions of the main memory. Later computers will not have main memory on the motherboard, and the CPU will rely entirely on memory modules.
All content on external memory must pass through memory in order to function.
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The computer's memory round talk bar acts as a bridge.
The main function of the memory module is to temporarily store the operation data in the CPU, as well as the data exchanged with external memory such as hard disk, it is the bridge between the external memory and the CPU, the memory module is one of the important parts of the computer, the operation data of the CPU is temporarily stored, and the operation of all programs in the computer is carried out in memory, and the performance of the memory has a great impact on the computer.
Random Access Memory (RAM), also known as main memory, is the internal memory that directly exchanges data with the CPU, which can be read and written at any time (except when refreshing) and is fast, as a temporary data storage medium for the operating system or other running programs, RAM can write (deposit) or read (remove) information from any specified address at any time when working.
Memory module composition:
1. Storage matrix.
The core part of the RAM is a register matrix that stores information, called the trouser cavity memory matrix.
2. Address decoder.
The function of the address decoder is to translate the binary number corresponding to the address of the roll register into a valid row-select signal and a column-select signal, so as to select the memory unit.
3. Read and write controllers.
When accessing RAM, the read operation to the selected register is to carry out the write operation, is controlled by the read and write signal, during the read operation, the data of the selected unit is transmitted to the CPU (** processing unit) by the data line, the input output line, and the CPU stores the data into the selected unit through the input input line, the data line.
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A memory module is a piece of information that is written or read out.
The function of the computer memory module is a temporary storage area between the CPU and the hard disk, and the function is to ensure that the CPU works efficiently. Memory is an indispensable part of the computer, the computer can be lit without a hard disk, but it is absolutely impossible to light up without memory.
Because according to von Neumann's computer structure, the cache in the CPU and the memory on the motherboard belong to the internal memory of the source of the shouting, while the hard disk, U disk, Zheng state floppy disk, etc. are all external memory, and the computer can be turned on without external memory, but it is absolutely not possible without internal memory.
A memory module is a computer component that can be bus-addressable and read/write by the CPU, and was once an extension of the main memory in the history of personal computers.
Computer hardware
The memory can not be simply regarded as a data warehouse, the usual use of programs, such as Windows system software, office software, filial piety game software, etc., including application software, although installed on the computer hard disk, but only when the memory is transferred into the memory can be really used, when the computer memory is not enough, you can increase the memory module, but you should try to use the same specification of the memory module.
The memory module is an indispensable part of the computer, and the memory module in the computer is equivalent to a bridge, responsible for the data exchange and processing between the data and the processor on the hardware such as hard disks, motherboards, graphics cards, etc., and all the data transmitted to the processor by the computer must be transmitted and processed by the memory module and the processor, because the read speed and storage speed of the memory are the fastest.
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The main function of the memory module is to temporarily store the computing data of the CPU, as well as the data exchanged with external memory such as hard disks, which is equivalent to a bridge in layman's terms.
Random access memory is internal memory that directly exchanges data with the CPU. It can be read and written at any time, and it is fast, often as a temporary data storage medium for the operating system or other running programs. When RAM is working, information can be written or read from any specified address at any time.
The biggest difference between it and ROM is the volatility of the data, that is, the data stored in the event of a power failure will be lost.
Memory is a device or component used to store a large amount of information in a digital system, and 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). ROM is read-only memory, in addition to fixed storage data, **, solidification program, also has a wide range of uses in combined logic circuits.
The purchase of computer memory modules
1. Memory brand: For example, Kingston is a brand with a relatively large market share, which is the first choice of most users, and it is also a good choice for high-end brands such as Jiruida and Shigroup.
2. Memory capacity: The memory capacity on the market is generally 4G, 8G, and 16G. If the user wants to have a larger memory, they can build it by buying multiple brands and models of the same brand.
3. Memory algebra: In the selection of memory, it is also determined by referring to the motherboard memory or processor, NTEr100 series motherboards can use DDR4 memory, and the new generation of Ryzen processors can also use DDTR4 memory.
4. Memory frequency: Generally speaking, the memory capacity is equivalent to the diameter of the water pipe, and the memory frequency is equivalent to the valve of the water pipe. The larger the valve, the faster the water flow will be.
Therefore, in the case of the same capacity memory, if the frequency is higher, the performance will be higher, and the higher the frequency, the higher the memory.
Memory is an indispensable component of a computer (PC, MCU). Unlike dispensable external memory, memory is a component that reads and writes on a bus; Memory is more than just a data warehouse. In addition to a small number of indispensable programs in the operating system to reside in memory, the programs we usually use, such as Windows, Linux and other system software, including typing software, game software, etc., although a large amount of data including programs are placed on external memory devices such as tapes, disks, optical discs, mobile disks, etc., but any data in external memory can only be really used when transferred into memory. >>>More
Mixed plugging is possible, as long as the parameters of the two memories are about the same, in fact, as long as it is not dual-channel, the parameters of DDR memory are similar, generally put the latest maximum capacity in bank0, and then bank1, that is, your 512MDDR400 is placed in bank0 slot (the one closest to the CPU), and 256DDR333 is placed in bank1. Of course, if you mix and plug in, the DDR400 will automatically drop to 333 to run, but the increase in capacity can make up for the lack of speed, and the speed is almost unfelt, if you are running large software, large memory will definitely prevail. You can tell by the speed at which you open a word file. >>>More
The speed of adding memory will be felt.
DDR3 is definitely DDR2 good, but the slots are not the same, that is to say, two slots cannot be inserted into the same slot. If you originally support DDR2 800, then you can only change DDR2. If the motherboard is a mix of DDR2 and DDR3, remember to correspond.
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