Can the CPU directly access data stored in memory?
cpu can directly access data stored in memory.
The CPU can only access memory data, and external storage data must be read into the memory before being accessed by the CPU.
Memory data refers to: data in the memory stick and CPU cache. Memory data is temporary data and cannot be retained for a long time.
External storage data refers to: data in hard disks and optical disks. External storage data can be retained for a long time.
Note:
The central processing unit (CPU) is one of the main devices of an electronic computer and a core accessory in the computer. Its function is mainly to interpret computer instructions and process data in computer software. The CPU is the core component of the computer that reads instructions, decodes them, and executes them. The central processing unit mainly consists of two parts, namely the controller and the arithmetic unit, which also include cache memory and the data and control bus that realize the connection between them. The three core components of an electronic computer are the CPU, internal memory, and input/output devices. The main functions of the central processing unit are to process instructions, perform operations, control time, and process data.
In computer architecture, the CPU is the core hardware unit that controls and allocates all hardware resources of the computer (such as memory, input and output units) and performs general operations. The CPU is the computing and control core of the computer. The operations of all software layers in the computer system will eventually be mapped to CPU operations through the instruction set.
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