Introduction of Linux Operating System

What is Linux?

Linux is a operating system. In 1991 Linus torvalds launch a kernel for open source software that was known as Linux kernel. Open source means that code is open and it can be modify. So we can say that Linux is a kernel not a fully operating system.  Linux works just like that a windows operating system or a mac operating. Linux is a GUI version of UNIX. Linux has a large of functions like multi-user, multitasking, multiprocessor etc. Linux can run on many platforms. Linux has some paid versions  and some paid versions. Linux is used for many computing platform like PCs and supercomputer.

History of Linux:-

In 80’s, Microsoft’s DOS was dominated operating system for PC. After sometime APPLE MAC came in the market . Apple MAC was better, but it was expensive. After sometime UNIX came in the market. UNIX was much better, but much and more expensive operating system. It was only for mini computer for commercial applications. In 1984 by Rechard Stallman started a project that is known as GNU. GNU  is a changed name, but GNU is not UNIX. Aim of the GNU project is that develop a operating system like UNIX which is free for coping and modification. In 1991, Stallman built the first GNU  C compiler.  After sometime Andrew Tanenbaum developed a simplified version of UNIX that was known as MINIX. MINIX was run on PC. But MINIX was only use for students. It had no intention for commercial use. In sep 1991, Linus Torvalds, who a second year student of computer science in University of Helsinki, developed the preliminary kernel of Linux, known as Linux version 0.0.1 .

Characteristics of Linux Operating System:-

Some advantages of Linux operating system's are given below:-

Powerful Operating system:-

• ·         Linux is free operating system.
• ·         No requirement for latest hardware.
• ·         You can run the program for any purpose.
• ·         You can share the program with others.
• ·         Linux is suitable operating system for security purpose.

Free Operating system:-

• ·         Linux is free operating system.
• ·         Linux is open source operating system. Means you have code of the operating system and you can modify it.
• ·         You can improve the program and release those improvements.
• ·         It licensed under GPL.

Multi-user Operating system:- Multi-user operating system allows for multiple user to use the same computer at the same time or different time.

Multiporcessor Operating system:- Linux  operating system capable of supporting and utilizing more than one processor.

Multitasking Operating system:-   Linux operating system capable of allowing multi software processes to run at the same time.

Multithreading Operating system:- Linux operating system allows different part of a software 

program to run concurrently.

Linux Software:-

Red Hat Linux:- This is the original Linux distribution.

Red Hat Enterprises Linux:- This is the commercial and non free version of linux. Red Hat Linux is aimed at big companies using Linux server and Desktop in a big way.

Debian GNU/LINUX:- A free software distribution. Popular for use on server

Gentoo Linux:- Gentoo is a specialty distribution meant for programmer.

Ubuntu:- Ubuntu is a free Linux operating system. Ubuntu is a reliable and stable operating system. Ubuntu has good hardware support for most of the companies.

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Best Embedded System Training Company in Roorkee, Noida, Dehradun &Lucknow

Best Embedded System Training Company in Roorkee

What is Embedded System ?

An Embedded system is a small part of a mechanical or electrical system with a separate function, often with real time computing constraints. Embedded system is a part of a complete device. Embedded system may hardware or mechanical part of a system. In this era most of the systems are use embedded system. Now days 95% microprocessors are manufactured by embedded system. Embedded system is a combination of hardware and software and it is a part of a complete system. Some example of embedded system – Air Conditioner, DVD player,  ATM machine, Digital Camera, Router, Video Game Console, Mobile  Phone etc. So we can say that embedded systems are everywhere. We can say that embedded system is a integration of hardware and software.

Characteristics of Embedded System:-

• ·         Embedded systems are use for special purpose. Embedded systems are designed to execute a single program, repeatedly.
• ·         Now Embedded system is multi-functioned, but single purpose.
• ·         Embedded system are designed in low cost, embedded systems are simple systems, embedded systems are consume minimum power, embedded system performs functions fast.
• ·         Embedded system continually reacts to external events and it computes certain results in real time.

Components of Embedded system:-

• Hardware:- It consistes of a microcontroller with some peripheral IC’s.
• Embedded RTO’s:- Devices who performs complex functions have an embedded operating system insite.
• Device Drivers:- A software who acts between software (Operating system) and the hardware (peripheral device) is called a device driver.
• Communication Stack :- Embedded system communicates with external world, it has a communication software who runs on the top of operating system.
• Embedded Application:- Embedded system performs the predefined function of device.

Career in Embedded system :-

In this field you have many career opportunities as a reputed position in the technical industries. As we know that embedded systems are a combination of hardware and software. In all organizations have a reputed position as a embedded system engineer. If you be a embedded system engineer, you have a lot of job opportunities in the IT field. Every organization prepare a software and they want to integrate it with hardware. So you that time you will have that opportunity to take that work and you will have a great chance to grow your career in a advance level.

How can you learn about Embedded System ?

Embedded system is a powerful domain  to achieve a specific position in any organization or company. If you are really interested to learn about embedded system than Cetpa Infotech Pvt. Ltd. is the best embedded system training company in Roorkee. Cetpa Infotech has extremely educated and well experienced trainers in their domain. Many institutes or companies challenge that they can train you for embedded system engineer, but Cetpa Infotech is the reputed embedded system training company in roorkee. Cetpa Infotech provides fully practical knowledge. Cetpa Infotech Pvt. Ltd. has available both sort term and long term courses for embedded system training in roorkee. Cetpa Infotech provide their courses for students and professionals. You can join your courses as summer training or winter training.

       Cetpa Infotech Pvt. Ltd. provides a reputed certificate for Embedded training. The certification helps you to get a specific position in any organization or company. Cetpa Infotech Pvt. Ltd. has many other branches in various cities like Dehradun, Lucknow, Noida and Roorkee. 

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What is Virtual Machine (VM) & How It Works ? | VM Ware ?

Hello Friends
    In this post we learn about virtual computers. We can define virtual computers as given below.

Define:-

Virtual computer is also called as virtual machine. A virtual machine is a type of computer software, like a physical computer. It runs operating system and applications.Virtual computer is small set of specifications and configurations and is backed by the physical resources of a host.

About virtual computer:-
     Virtual computer is a type of computer software. It works as same our real computer. Virtual computer uses a part of our system's hard disk, a part of ram, a part of processor etc. Virtual computer uses system's hardware as speakers, lan card, keyboard, mouse etc. In the virtual computer we don't need  of any specific driver for any activities. It will automatically use those drivers.

Advantages of Virtual computer:-
     If we use virtual computer in our system then we get many advantages of virtual computer. Some advantages are given below:-

• In the virtual computer we can use a operating system in virtual computer.
• If we use virtual computer then we can use two  or more operating system at a time.
• By the virtual computer don't need to dual boot for use a new operating system.
• If you are a developer of android apps or an ios apps then virtual computer is very useful for you. You don't need to any emulator or any specific device. You can install android os or ios in virtual computer for run apps who developed by you.
• If you want to try to use any operating system in your computer than you can use it.
• By the virtual computer you don't need of any specific hardware. Because virtual computer use the system's hardware.