Besides literally hooking up pc

Computers Communicate

Once they’ve been wrapped up by TCP, these units of data are called “packets.” TCP temporarily creates a connection between the source and destination computers. This layer is at the top of the internet protocol suite (“top” meaning nearest to what humans use and see). There are many protocols associated with the application layer, largely because different kinds of data are sent in different formats. Users and network administrators typically have different views of their networks.

Each device on a network uses an Internet Protocol or IP address, a string of numbers that uniquely identifies a device and allows other devices to recognize it. In an office setting, you and your colleagues may share access to a printer or to a group messaging system. The computing network that allows this is likely a LAN or local area network that permits your department to share resources. Bluetooth is a relatively newer technology, which usually wirelessly connects accessories to a device, such as a Bluetooth headset that allows you to talk hands-free on your mobile phone. You can also create a Personal Area Network with Bluetooth technology, which allows you to connect up to eight computers. The central computer is known as the master and the seven auxiliary computers are known as slaves.

“After I broke my neck and became paralyzed, my mother gave me a copy of A Brief History of Time, which had just come out. She told me that people in wheelchairs can still do amazing things. Looking back, I realize how prophetic that was.” Equalizer first ran on an Apple II computer linked to a speech synthesizer made by a company called Speech Plus. This system was then adapted by David Mason, the engineer husband of one of Hawking’s nurses, to a portable system that could be mounted on one of the arms of a wheelchair. With this new system, Hawking was able to communicate at a rate of 15 words per minute. Hawking lost his ability to speak in 1985, when, on a trip to CERN in Geneva, he caught pneumonia. The doctors asked Hawking’s then-wife, Jane, whether they should turn off the life support.

Unlike the P2P model, clients in a client/server architecture don’t share their resources. This architecture type is sometimes called a tiered model because it’s designed with multiple levels or tiers. Computers have changed the way we communicate by introducing email, social networking sites, online chats, instant messaging, Skype, and video calls.

A slave computer must call up to the master to get access to the Personal Area Network , or to receive access to any of the other slave computers. A Wireless Area Network has the same function of connecting computers on a home or office network as a LAN, but it distributes the signal wirelessly. A wireless connection allows compatible desktop computers, laptops, smart phones and tablet devices to connect with one another. A wireless connection is most commonly used in homes to connect with the Internet.

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