Study concluded 2019/7/25

Study concluded 2019/7/25

1. markdown basic grammar
2. Computer Basics

markdown

markdown is a lightweight markup language, a combination of code and documentation, you can quickly and easily document notes and other documents for editing.

Computer Basics

First, programming

Programming languages, like English and Chinese, is a thing to communicate with the other things bell media, programming language is communication between man and computer media. Yes, his ideas were expressed on a computer in accordance with a language syntax and format, let the computer become his "slave."

Second, computer components

1.CPU (brain)

1. Controller, command and control system of the computer.
2. Calculator, arithmetic and logic operations to achieve.

2. storage

1. RAM
   memory is a computer hardware device that temporarily stores data, and interact directly with the CPU, memory speed, but small capacity, power off the storage content will disappear.
2. External memory
   external memory of large capacity hardware permanently store data, operation is directly interact with the memory, and not directly interact with the CPU.

3. The input device

Computer input device information, such as: a keyboard, mouse, graphics scanners.

4. Output device

Computer output devices such as: monitor, printer, graphics scanners.

5. Other equipment

1. Storage ROM
   read-only memory, is completed in the factory encoding, can not be changed, the general store BIOS (Basic input output system) program for starting the computer.

2. CMOS storage

   Usually CMOS reservoir for holding the time and date of the stable by an internal power supply, even if the power can be kept up to date.

operating system

1. What is the operating system

The operating system is located between the computer hardware applications software, is responsible for coordinating the management of computer resources and software resources, hardware will be a complex operation, packaged as a simple interface for control programs that people use.

2. What is the use operating system

The operating system is to provide an interface for the application to operate the hardware

3. The operating system's startup

Operating system into memory from the hard disk read, CPU to run the operating system code, after successfully running the operating system takes over operation of the hardware work.

4. Start the application

Application code with a hard disk into memory, CPU running the application code, you can use the application to run successfully.