THE DIGITAL AGE

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THE DIGITAL AGE by Mind Map: THE DIGITAL AGE

1. Technologies of information and communication

1.1. "Information is an organized set of processed data, which constitute a message that changes the state of knowledge of the subject or system that receives said message

1.1.1. Radio, television, mobile phones, computersystems

2. Computer Networks

2.1. Set of interconnected computers that share resources, information and services

2.1.1. Protocol TCP / IP

2.1.1.1. TCP / IP protocol

2.1.1.1.1. set of rules that regulate communication between machines on the Internet

2.1.1.2. TCP / IP

2.1.1.2.1. is organized in layers or modules, it is a way to divide a complex problem into smaller problems to facilitate its implementation

2.1.1.2.2. The TCP / IP layers are: – Application layer: user applications ie. browser – Transport layer: manages communication – Internet layer: sends the data in the form of packets (datagrams) – Network access layer (hardware, network card)

2.1.1.3. System Binary. Range of integers

2.1.1.3.1. Formula to know the range of integers as a function of number of bits (digits, figures): • B ^ n • B = base of the number system (in binary system 2) • n = width of digits

2.1.2. Datagrams

2.1.2.1. The data at the time of transmission is encapsulated in packets or datagrams

2.1.2.2. – Header: information about the package itself (origin, destination, size, etc) – Data: the data that should be sent – A datagram resembles a letter, the header would be the destination and the sender, and the data would be the letter that the envelope contains.