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  What is computer network? A computer network is a mesh that interconnects thousands of computer systems for data transmission. Also known as nodes, these interconnected devices send, receive and exchange data, voice and video traffic, thanks to the hardware and software that make up the environment. Computers, servers, cell phones and modems are examples of nodes connected to a network.  These equipments are everywhere, such as in our homes, companies and public agencies. Discover the Asus server rang. The computer network breaks down geographic barriers and allows information to be shared between people and companies around the world, making information available locally or globally, and is useful for the provision of several essential services. Applications such as sending and receiving emails, watching video on TV, or receiving audio on the cell phone and other services that involve data transmission are only possible over a network. Other examples of applications for the...

  Polynomials   Algebraic expressions that contain monomials are considered polynomials. The study of these expressions is directly related to arithmetic operations.  Polynomials are algebraic expressions that have monomials formed by a coefficient and a literal part. Polynomials are algebraic expressions that have monomials formed by a coefficient and a literal part. A polynomial is an algebraic expression formed by monomials and arithmetic operators.  The monomial is structured by numbers (coefficients) and variables (literal part) in a product, and the arithmetic operators are: addition, subtraction, division, multiplication and power. To better understand what a polynomial is, see some examples: 5 Coefficient:  5 Literal part: Any variable raised to zero, ie x⁰ = 1 → 5 . x⁰ Arithmetic Operators: Multiplication. Two . x. and Coefficient: 2 Literal part: a. and Arithmetic Operators: Multiplication. 3 . x. y + (4 .x : 2 .x)  Coefficient: 3, 4 and 2 Literal...

  Types of operating systems  It is important to note that the operating system does not exist in a single standard. This means that there are several patterns available on the market, the ones found are:  MS-DOS operating system  Windows operating system  UNIX operating system  Linux operating system  Android operating system Apple operating system  Endless OS operating system  Introduction to the MS-DOS   Operating System DOS   Is a single-user, single-task operating system, with basic non-reentrant kernel functions: they can only be used by one program at a time. DOS stands for Disk Operating System or Disk Operating System. Main Features of MS-DOS Command prompt It is a command line interpreter on the operating system and on Windows NT based systems. It is a command analogous to command.com for MS-DOS and Windows 9x systems or shells used by Unix systems.  Command prompt Examples: dir, md, cd, rd: individual tasks And the o...

  Operating Systems   The operating system is a set of programs that control the operation of a computer, that is, a sequence of instructions written to be interpreted by a computer. Its function is to manage system resources (define which program receives processor attention, manage memory, create a file system in others. Operating system allows a person to access and control parts of the computer without having specific technical knowledge, making the computer accessible.  Evolutions of Operating System Components   Now as the operating systems emerged and developed until reaching the versions we know today, we can present their evolution during the past times until the current version.  First generation   The first electronic computers were introduced during the 1940's and 50's. At that time, all programming was done in machine language, usually by connecting wires to breadboards to control basic functions as complex operating systems did not exist. In t...