In theory, what can the instructions in the application be divided into?
- 王林Original
- 2020-12-10 09:28:57229948browse
Theoretically speaking, the instructions in the application can be divided into two categories: the instruction set of the central processing unit (CPU) and the one used to request specific services from the operating system. An instruction refers to a code that tells the computer to perform a special operation. An instruction usually consists of an operation code and an address code.
#Environment of this article: windows10, Dell G3.
Theoretically, the instructions in the application can be divided into two categories: the instruction set of the central processing unit (CPU) and the one used to request specific services from the operating system.
Basic concept:
Instructions are codes that tell the computer to perform a special operation.
The command sent by the computer program to the computer processor is the "instruction". The lowest level instruction is a string of 0s and 1s, indicating that an entity job operation is to be run (such as "Add"). Depending on the instruction type, a specific area of storage called a "register" contains data or data storage locations that can be used to recall the instruction.
In computer assembly language (assembler), each language generally only responds to a single processor instruction. Each high-level language can respond to multiple processor instructions after being programmed.
In assembly language, macro instructions are expanded into multiple instructions (based on the encoded source macro definition) during assembly program processing.
Composition form:
Instruction is a command that instructs the computer to perform a certain operation. It consists of a string of binary numbers. An instruction usually consists of two parts: operation code and address code.
Operation code: Indicates the type or nature of the operation to be completed by the instruction, such as fetching numbers, adding, or outputting data, etc.
Address code: Indicates the content of the operation object or the address of the storage unit where it is located.
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