input and output peripherals

Computer peripherals

In computing, the term applies to any peripheral or accessory equipment that is connected to the CPU (central processing unit). For example: printers, scanners, card readers and CD and DVD drives, audio cards, mouse, keyboard, external storage drivers, monitors and webcams are examples of peripherals.

From the first time that was listened to speak about calculators, to the reality of current supercomputers, the development and improvement of computer accessories increasingly evolves, as we can see in this article.

Computer Peripherals

Common input peripherals

Each peripheral has a well-defined role. Some of them perform tasks requested by the computer, such as the case of the printer, or allow us give orders to the computer to run a task, such as a mouse or keyboard, always according to the function for which they were designed.

Among the simplest peripherals we can cite the keyboard that allow sends to computer information entered by the operator, the mouse, that allows sending information by moving or the actions of buttons, and the printer, that receives information from the computer and print that information on paper.

Computer Peripherals

Others, a little more complex, such as the sound card, that receives information from the processor and sends it to the speakers, touch-sensitive systems, heat sensors, light sensors, modem, game controllers like joysticks, speakers, and a multitude of others devices.

There are three types of peripherals: The input peripherals, that send information to the computer, such as keyboard, mouse, microphone, the output peripherals, that transmit information from the computer to the user through the monitor, printer, speakers or headphones, and peripherals mixed, that send and receive information to and from the computer simultaneously, such as scanners, CD and DVD Drives and VoIP phones, among others.

Computer Peripherals

The main information input peripherals include: keyboard, mouse, CD and DVD drives, scanner, microphone, joystick, touch screen and stylus.

The main information output peripherals are: video monitor, recorder and CD player, speakers, laser or inkjet printer, motion sensors, temperature and virtual reality glasses.

The main data input and output peripheral are: modem, CD and DVD drives and hard disk.

Computer Peripherals

If you wish, you can get more information about the different types of input and output peripherals clicking on this link.

What is hardware and Software?

A computer, also called PC, is a device that allows us to process information and calculate results, of course that this classic definition is somewhat outdated, as it is currently very wide range of tasks that can be performed with this device.

Currently with a computer, we can draw, write, play and communicate with others around the world without matter the distance, and being faithful to the original definition, we can process information using pure data through software programs.

Hardware and Software

Are hundreds of thousands the applications that we can install on a computer, each user can choose the necessary software that best fits your needs and requirements for each task begins.

What is a computer?

Basically a computer consists of two parts: hardware and software.

The hardware is a generic term used to designate all physical component parts of a computer, namely the cabinet, monitor, motherboard, RAM, processor, video card and others.

In the other hand, the software is the code in form of program responsible for providing the necessary instructions to the computer to perform a certain action. This category includes the operating system, games, device drivers, etc.

What is the hardware?

As well as the computer is divided into hardware and software, the hardware is also divided into two categories, called basic hardware and complementary hardware.

While the basic hardware includes all the necessary components for the operation of the computer, such as motherboard, monitor, keyboard and mouse, being in this case the motherboard, RAM and CPU the most important components of the whole.

Hardware and Software

On the other hand we have the complementary hardware, hardware that is not needed for a computer to function normally. Examples of such hardware are printers, scanners, flash drives and others.

Another way to differentiate the type of computer hardware is based on the role within it. In the following paragraphs we will know how this hardware are divided.

Input Devices: Devices that allow the entry of information to the computer.

Chipset: Chip integrated on the motherboard, the chipset allows traffic information between the microprocessor and other components that make up the PC.

Hardware and Software

CPU: This device has the task of interpreting and executing instructions sent from the operating system, and manages the requests made by users through the programs.

Hardware and Software

RAM: The RAM, acronym of Random Access Memory, is where the computer stores the programs, data and results processed by the CPU, allowing quick retrieval by the system, providing better performance than retrieving it directly from the hard disk.

Hardware and Software

Storage drives: This devices are intended for storing data both the user and the system. I.e. they are the physical space where are stored the files of the operating system, programs and user documents. These can be hard disks, CD, DVD or Blu Ray, flash drives or external removable drives.

Hardware and Software

Output Devices: These are the devices that show the user the results of its operations. This group includes monitors, printers and everything that serves the purpose of offering the user the ability to see the result of their work.

Hardware and Software

Mixed devices: This group includes all those devices that are capable of receiving and delivering information. Examples of these devices are network cards, modems and communication ports, among others.

Hardware and Software

What is the software?

The software is a computer code written in a programming language and compiled in the form of application that you use to perform a particular task. Also as in the case of hardware, the software should be divided into categories based on the role within the system.

Software Concepts

The software basically is a sequence of instructions that are interpreted and / or implemented to manage, redirect or modify a data / information or event.

Software is also a product which is developed by software engineering, and includes not only the program for your computer, but also manuals and technical documentation. Currently, these manuals generally are provided in PDF format.

Hardware and Software

Computer software applications comprises a sequence of instructions that is interpreted and executed by a processor or a virtual machine. In a functional software, that sequence follows specific standards that result in a certain behavior.

In our computer, all applications we use are software: Windows, Outlook, Firefox, Internet Explorer, Google Chrome, and even the antivirus apps.

A software can be executed by any device capable of interpreting and executing instructions for which it is created. When software is represented as instructions that can be executed directly by a processor, we say that is written in machine language.

The execution of a software can also be performed through an interpreter, responsible program to understand and execute each of its instructions. A special category of interpreters and remarkable are the virtual machines such as the Java (JVM) virtual machine.

Hardware and Software

The best-known device that has a processor is the computer. Nevertheless, there are other programmable machines such as mobile phones, industrial automation machines, etc.

Software Rating

System Software: This group includes the operating system, device drivers, system utilities and all the tools necessary to control the specific characteristics of these computers.

Software Implementation: It is called application software to all programs used by the user to perform a particular task. This group includes the office software, graphic design, accounting and electronic, to cite just one small fraction of all categories of applications that we can find in the market.