Basic Computer knowledge

Computer systems consist of two major parts: hardware system and software system, as shown in:

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Second, von. Neumann system: The computer is composed of an operator, a controller, a memory, an input device and an output device.

Where the operators and controllers are integrated collectively referred to as the central Processing Unit (CPU)

Calculation of the components through the bus connection to form an organic whole, the microcomputer bus has three kinds: address bus, control bus and data bus

Functions of the operator: complete arithmetic operations and logical operations

Controller function: Coordinate and command the computer parts work

Memory function: Store program and data, realize memory function

Input device function: input data and convert to in-machine information store

Output device functionality: Converts in-machine information into characters, graphics, and displays that are easy to identify, process, and use

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Motherboard physical Diagram

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CPU, memory, hard disk, video card physical diagram:

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Distribution of Linux

Slackware;debian;redhat;archlinux; Gentoo; LFS; Andriod

Linux Philosophy thought:

1, all documents

2, small program for single purpose

3, combining small programs to complete complex tasks

4, text file save configuration information

5, try to avoid capturing the user interface

6, providing a mechanism rather than a policy

Get the CentOS release (ISO) approach:

Https://wiki.centos.org/Download

Http://mirrors.aliyun.com

Http://mirrors.sohu.com

Http://mirrors.163.com

Basic Computer knowledge