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MODULATION

Modulation is a process in which a message signal or called as modulating signal is merged with a comparatively stronger signal or called as carrier signal for a quite large distance signal transmission. In this process , characteristics of a high frequency signal , is changed according to the instantaneous amplitude of  the information signal.  Modulation is used for Long distance transmission. Multiple signals can be transmitted on a single or in a same channel. It also makes signal to become more stable. It promotes noise rejection also.    APPLICATIONS: Modulation is used for broadcasting both audio and video signals. Modulation is used in entire communication industry for all types of communication such as in Mobile, Television, Satellites etc. TYPES OF MODULATION: Amplitude modulation  Frequency modulation Phase modulation In this we are going to discuss about amplitude modulation.  1. AMPLITUDE MODULATION: Amplitude modulation or just AM is one of th...
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Linux Operating System

  LINUX OPERATING SYSTEM   What is Linux Linux is a free operating system that was created by Linux Tarvolds when he was a student at the University of Helsinki in 1991. Tarvolds started Linux by writing a Kernel , which is the heart of the operating system, partly from scratch and partly from using publicly available software. He than released it to his friends and to a community of “ Hackers” on the internet and asked them to work with it and enhance it. Red hat linux is the most popular commercial distribution of Linux.   Features of Linux Operating system The common features included in every version of Linux are:   Multiusers: Not only can you have many user accounts available on a linux system, but you can also have multiple users logged in and working on the system at the same time.   Multitasking: You can have many programs running at the same time in Linux. Besides meaning that you can have lots of programs going at once, Many of ...
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Microsoft Access

  INTRODUCTION Ms Access is a RDBMS (relational database management system) under windows. It is used to store and manipulate large amounts of data. The data is stored in multiple tables and access allows us to set up relationship between the tables to facilitate data retrieval.   Ms Access is an object oriented program i.e. everything in Ms Access is an object. Each object has properties that defines how it appears and what work it performs. Ms- Access has a number of components out of which the most important component is the table object. Tables are objects that hold the data and all related objects such as Queries, Forms and Report that are used to manage this data in tables. Database   A database is a collection of data related to a particular subject or purpose, such as tracking customer orders or manipulating a music collection. Using Ms Access you can manage all your data from a single database file. The database will have an extension name. MDB. with in...
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Microsoft Powerpoint

  INTRODUCTION   PowerPoint is a Microsoft windows based presentation package, which is used to build and design slides for presentations at ease and with immense speed. By using Power point any type of project can create a complete slide show presentation.   PowerPoint has a number of merits. The main advantage of PowerPoint is that you can also incorporate colors, different fonts of text, images, sound and animation custom animation effects in your presentation slides. It is easy to use and very effective for presentations.   How to Run Power Point   Start à Program  à MS Power Point   Slide:- A slide in Power Point is a page where you prepare your presentation.   Adding New Slides à Each presentation would have one or more slides. Each power point slide has a specific layout associated with it.   Format à Layout choose anyone slide type à OK   Changing slide layout à You can also change the layo...
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