What is the use of linux for employment?
Linux as a free and open source operating system, anyone does not need to spend a penny to be able to download and use, and Linux is relatively simple, the threshold for entry into the industry is very low, 0 basic inexperienced through the training can also be learned very well.
According to the salary statistics of the job set, the starting salary of Linux engineers is about 10,000, and with the increase in working years and accumulation of working experience, the salary is constantly rising, and the welfare treatment is very good in all aspects.
Good employment prospects
The Linux industry has a large talent gap, the company's recruitment positions, and Linux training can be selected after the completion of a lot of jobs, you can find employment opportunities in all walks of life, the career outlook is good.
The role of linux in big data technology?
Role: encryption of content for security.
What is the use of android
Android is an operating system on a common cell phone platform that serves a number of purposes, basically the same as the operating system we know it does basically the same thing.
First of all, because our electronic products such as cell phones actually have an input system, including output electronic devices, and other hardware facilities such as the main call voice, so the first function of the operating system is to carry out device management. Secondly, on the basis of device management, it is also necessary to manage the memory, for example, where we can find the system program where you can store files where you can access the files that you have downloaded. These functions can be summarized as storage management and file management. At the same time, we know that the Android system can run many programs, such as we can listen to music while surfing the Internet, or in the editing of other documents and files then between these programs, their operation involves a process management issues, so in general the operating system both to maintain the bottom layer, including some information about the hardware, while at the same time to give the upper layer of the file system to provide security.
What is the main role of an operating system (e.g. linux) for embedded systems?
Linux as an open source free operating system, with its application as a system can be more convenient for system function tailoring and cross-architecture porting.
In different target architectures (x86, ARM, PowerPCetc.), due to the different assembly instruction sets, the same piece of code using different compilers and libraries to generate executable code is different. Different systems of Linux development tools are different.
Embedded linux belongs to a high degree of cut Linux, he will desktop Linux has most of the application functions (such as GUI tools, calculators, e-mail etc.) and some of the system functions are omitted, but the integration of the developer hopes that the embedded product has a special application functions (such as a Linux as the system of the touch marine navigation can be). (For example, a Linux-based touch marine navigator can remove unwanted function blocks according to functional needs, but add GPS positioning, speed and heading calculation, route planning, touch detection and corresponding function realization, etc.).
Embedded systems often refer to the system's resources (such as DRAM/FLASHROM, power consumption, operating frequency, etc.) have greater limitations and the system's operating environment is relatively variable and harsh (such as temperature and humidity changes in the large, acidic and alkaline corrosion, external impact and vibration, external electromagnetic interference, high voltage caused by electrostatic damage to the circuit, etc.). This also requires developers to find out more and hypothesize possible emergencies and take preventive measures accordingly. Most embedded systems also have extremely high requirements for response time constraints and correctness.