AM Radio using 555 timer IC

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Installing Active Directory on Windows Server 2012

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Description This article will walk you through setting up the Active Directory Role on a Windows Server 2012. This article is intended to be used for those without an existing Active Directory Forest, it will not cover configuring a server to act as a Domain Controller for an existing Active Directory Forest.  Content Installing Active Directory Configuring Active Directory Installing Active Directory 1. Open the  Server Manager  from the task bar.  2. From  Server Manager  Dashboard select  Add roles and features . This will launch the Roles and Features Wizard allowing for modifications to be performed on the Windows Server 2012 instance. 3. Select  Role-based or features-based  installation from the Installation Type screen and click  Next .  Note: Roles are the major feature sets of the server, such as IIS, and features provide additional functionality for a given role. 4. The current server is selected...
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555 TIMER

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Introduction: It is a IC chip used in vareity of timer,pulse generation and oscillator application. It is one of the cheapest and most rugged chip in the market. It is used to provide accurate and highly stable time delays or an oscillation. It is in widespread use due it's ease of use,low price and stability. It was estimated that 1 billion units are manufactured every year. Depending upon the manufacture the standard 555 package include 25 transistors,2 diodes and 15 resistors on a silicon chip installed in 8-pin mini dual-in-line package(DIP-8). The circuitary inside the chip takes about 10MA even if the o/p is not driving the load i.e it is not suitable for battery operation if the chip is to be powered all the time. This timer bascially operates in one of the two modes either as an Monostable(one shot)or an astable. The chip producing output frequency 1 cycle per second i.e 1HZ is called Oscillator.but below 1HZ is called Timer. The specification of 555 timer is...
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