Linux Self-study note (1): Composition of the computer

Logical part of the computer:

Arithmetic, controller, memory, input device, output device;

The composition of the computer:

CPU//operator, controller.

Bus (bus)//each part of the information transmission of the connection line, buses can be divided into data bus, address bus and control bus, respectively, for the transmission, data address and control signal.

Memory (Address storage device)//address: Storage is made up of a single memory unit, in order to effectively manage the memory, it is necessary to each storage unit numbered, that is, each unit is assigned an address code, called addressing. After addressing, the memory logically forms a linear address space. Addressing: Access to data, you must first give the address code, and then the hardware circuit decoding to find the address of the data, which is called addressing.

Read Ahead (cache)//access to some data will retain the cache, the next access directly in the cache, play an accelerating role in the current Internet any speed plus block must have a cache

I/O (input/output)//For hardware device interaction such as hard disk, memory, NIC, mouse, keyboard, etc.

OS (operating system)//calls to various hardware devices, software presented in a human understandable way

Linux Self-study note (1): Composition of the computer