Steps for reading memory and Data

Memory Function

Memory is the memory in the computer, used to storeProgramAnd data components, for the computer, with memory, can have the memory function, in order to ensure normal operation. The Windows 98 operating system and software we usually use are all stored in external storage. However, we only need to transfer them into the memory to run them.

The difference between memory and external storage is that external storage is permanent and has a large amount of data, while memory stores temporary or small amount of data and programs. Because the memory stores temporary data, data in the memory will be lost when it is shut down. When we want the computer to input data, the data will be stored in the memory first, then store the data to the hard disk. For example, when we input text to word, the data is stored in memory before clicking save. If the power is suddenly cut off or forced to close, the data in the word will be lost. When you click Save, the data will be stored as a hard disk. In this case, if you encounter the above emergency, the data will still exist when you open the word again.

Memory is divided into two parts: read-only memory Rom (it is dead, can not be deleted, and cannot cover other data, mainly used to store the memory vendor, model, etc) and random Memory RAM (for storing temporary data ).

For the CPU, Ram is like a long line with many spaces (with rows and columns). Each space has a unique address corresponding to it, if the CPU wants to call data from Ram, it first needs to send the address data to the address bus to locate the data to be accessed, and then wait for several periods after the period, the Data Bus transmits the data to the CPU.

As a temporary data warehouse, the memory serves as a bridge between the two. On the one hand, it needs to read the execution program and required data from the external memory, and on the other hand, it needs to serve the CPU for read and write operations, first, introduce the role of CPU.

CPU usage

CPU is a central processing unit (processor). It is the core of a computer. It acts like a human brain. It processes all data in the computer, while the motherboard chip is more like a heart, it controls data exchange. The type of CPU determines the operating system you use and the corresponding software.

Type of CPU: The current CPU has a dual-core, that is, two cores are processing. The more cores, the faster the processing speed.

Dual-core: It is two cores. The core (die), also known as the kernel, is the most important component of the CPU. The CPU center's bulging chip is the core. It is manufactured by a single crystal silicon with a certain production process. All CPU computing, receiving/storing commands, and processing data are executed by the core.

Dual-core processor: a dual-core processor integrates two computing cores on one processor to improve the computing capability.

The CPU is mainly composed of the memory generator, controller, register and internal bus. Registers are used to store operations and intermediate data after executing commands.

How Computers read data

Here is an example to illustrate how a computer reads data: for example, if you want to type, first press the keyboard, then send the data to the memory, and then the memory is sent to the CPU, the CPU extracts the required data from the hard disk, then the CPU sends the data to the memory after comprehensive processing, and then the memory sends the data to the monitor, so that you can see your words.