15-09-2017, 02:39 PM
Computer data storage, often called storage or memory, is a technology that consists of computer components and recording media used to retain digital data. It is a fundamental function and fundamental component of computers.
The central processing unit (CPU) of a computer is what manipulates the data by performing calculations. In practice, almost all computers use a storage hierarchy, which offers fast but expensive and small storage options near the CPU and slower but larger and cheaper options further away. In general, fast volatility technologies (which lose data when they are disconnected) are called "memory", while the slower and more persistent technologies are called "storage"; however, "memory" is sometimes also used when referring to persistent storage.
In Von Neumann's architecture, the CPU consists of two main parts: the control unit and the logical arithmetic unit (ALU). The former controls the flow of data between the CPU and memory, while the latter performs arithmetic and logical operations on the data.
The central processing unit (CPU) of a computer is what manipulates the data by performing calculations. In practice, almost all computers use a storage hierarchy, which offers fast but expensive and small storage options near the CPU and slower but larger and cheaper options further away. In general, fast volatility technologies (which lose data when they are disconnected) are called "memory", while the slower and more persistent technologies are called "storage"; however, "memory" is sometimes also used when referring to persistent storage.
In Von Neumann's architecture, the CPU consists of two main parts: the control unit and the logical arithmetic unit (ALU). The former controls the flow of data between the CPU and memory, while the latter performs arithmetic and logical operations on the data.