A mesh topology is not very common in computer networking today. In a mesh topology, every workstation has a connection to every other component of the network, as illustrated in Figure. Figure: Mesh Topology ADVANTAGES OF MESH TOPOLOGY: The biggest advantage of a mesh topology is fault tolerance, meaning that, if there is a break […]
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In a star topology, all computers are connected through one central device known as a hub or a switch, as illustrated in Figure 1. Each workstation has a cable that goes from the network card to the hub device. One of the major benefits of a star topology is that a break in the cable
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A bus topology uses one cable as a main trunk to connect all of the systems together (shown in Figure.1). A bus topology is very easy to set up and requires no additional hardware such as a hub. The cable is also called a trunk, a backbone, or a segment. With a bus topology, when
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Internet, intranet, and extranet are three terms that describe “Internet-type” applications that are used by an organization. INTERNET: If you wish to expose information to everyone in the world, then you would build an Internet type application. An Internet-type application uses Internet protocols such as HTTP, FTP, or SMTP and is available to persons anywhere
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Communication between two devices can be simplex, half-duplex, or full-duplex. SIMPLEX: In simplex mode, the communication is unidirectional, as on a one-way street. Only one of the two devices on a link can transmit; the other can only receive. Keyboards and traditional monitors are examples of simplex devices. The keyboard can only introduce input; the
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When we communicate, we are sharing information. This sharing can be local or remote. Between individuals, local communication usually occurs face to face, while remote communication takes place over distance. Data communications are the exchange of data between two devices via some form of transmission medium such as a wire cable. For data communications to
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A typical network involves having users sit at workstations, running such applications as word processors or spreadsheet programs. The workstation also is known as a client, which is just a basic computer running a client operating system such as Windows XP or Linux. These users typically store their files on a central server so that
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Switching techniques of pulse width modulation (PWM) have been popular in the area of power electronics and drive systems. PWM is commonly used in applications like motor speed control, converters audio amplifiers etc. PWM is used to adjust voltage applied to the motor. There is no single PWM method which can suite for all applications.
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Bluetooth doorbell is an advance doorbell which shows your image to the person standing at another side of this bell. This doorbell is made already! You can buy a wireless doorbell in any hardware store. However, this one you make yourself! Even better, as you get more confident with Arduino, you can modify it to
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In this mini-project, you’ll create two identical assemblies, each consisting of an Arduino and XBee, along with a button and a LED. When you press the button on one assembly, the LED on the other one lights up, and vice versa. Figure 1: Control LEDs with XBee-equipped Arduinos. Parts Required: You’ll be making two assemblies,
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