Computer System

Computer System

1. One of the basics and main tools in the world of the information and communication technology is the computer.

2. Software

   • It is the set of instructions ot programs that are introduced in a computer in order to carry out a process
   • Application software
     • It permits to execute specific tasks from the user
     • Word, Excel ,Auto Cad, Photoshop, Corel, Acrobat Reader
   • Functions
     • -Interprets and execute the instructions through theinterference that provides to the user
     • -It optimizes communication between input and output devices
     • -It Coordinates the processing of tasks
     • -It provides diagnostic errors of the basic parts of the computer
     • It serves as a connection to run the application software.
   • software system
     • It administrates and controls the operation of the hardware
     • Multiuser
       • It permits to two or more users to execute programs at the same time
     • Multitask
       • It permits that two or more programs or applications are executed at the same time
     • Windows, OS X, UNIX, LINUX
     • Multiprocessing
       • have more tan one processors which operates in the same memory but exeute simultaneously processes
     • Comand Line Interface
       • In this type of interface, the opertavie system provides a command line in which the user intoduces the instructions or commands formed by characters
       • MS-DOS and UNIX
     • Graphical Interface
       • In this interface, the execution of commands and programs is achieved by selecting figures or icons that represent them, or by displaying menus or windows
       • Windows, Mac OSx,, LINUX

3. Hardware

   • Join of components of physical devices that interfere in a computer system
   • Output devices
     • the ones that show to the user the data previously transformed.
     • Monitor, Speaker, Ptrinter
   • Input devices
     • the ones from which the information is introduced to thecomputerto be processed or transformed
     • Keyboard, Bar code Reader, Scanner, Mouse, Webcam, Microphone, Touch screen
   • Storage devices
     • the ones that permit to store or to save information
       • USB, Hard Disk, StickCard, DVD/CD
     • RAM: memory that stores information that its is being executed in that momento, so it can be processed quickly
     • ROM: programed memory by the manufactured and it is a permanent memory
   • Processing Devices
     • The central process unit, also called CPU is the component in charge to transform data into information