Presentation on DATA COMMUNICATION by Cj Subham
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Data Communication Topic for 5th semester ETC branch. SKDAV Govt. Polytechnic, Rourkela CONTENTS:- (i) Introduction (ii) Basic Parts of Data Communication (iii)Data Transmission Types (iv)Types of Serial Data Transmission (v)Data Transmission Modes (vi)Bibliography (vii)Conclusion
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Fundamentals of Telecommunication
Telecommunication involves transmitting information over a distance using technology. There are two main types of modulation used: analog and digital. Analog modulation includes amplitude modulation (AM), frequency modulation (FM), and phase modulation (PM). Digital modulation includes amplitude-shift keying (ASK), phase-shift keying (PSK), and frequency-shift keying (FSK). Modulation is the process of altering a carrier wave to allow it to carry information. Key concepts in telecommunication also include frequency, wavelength, bandwidth, transmission media, signaling, switching, and multiple access.
telecommunication basic 1
Telecommunication involves the transmission of information over distances using communication systems. A communication system has three main parts: a transmitter that processes the input signal, a transmission channel as the medium, and a receiver that operates on the output signal. Messages can be analog, varying continuously over time like voice, or digital, consisting of discrete symbols. Transducers convert between message forms. Communication channels can be simplex, half-duplex, or full-duplex depending on transmission direction. Undesirable effects like noise, distortion, interference and attenuation affect signal quality during transmission. Modulation encodes information onto carrier waves to transmit signals over long distances.
Lec1 :- Data communication and network
Introduction
Fundamental characteristics
Components of data communication
Data representation
Data Flow
Data communications Class notes
This document provides an overview of data communication systems and their key components and concepts. It discusses the basic components of a data communication system including messages, senders, receivers, transmission medium, and protocols. It then describes various concepts such as line configuration (point-to-point and multipoint), network topologies (bus, star, ring, mesh), transmission modes (simplex, half-duplex, full-duplex), and modems. The document focuses on explaining these fundamental building blocks and concepts to understand how data is transmitted between devices.
WLAN
A wireless local area network (WLAN) uses radio frequency technology to transmit and receive data over the air, providing mobility and flexibility as an extension or alternative to wired networks. Key advantages of WLANs include productivity, convenience, lower installation costs and mobility. However, WLANs also have disadvantages such as higher costs for wireless network cards and access points, susceptibility to environmental interference, and lower bandwidth capacity compared to wired networks. Common applications of WLANs include use in corporate, education, medical and temporary settings.
Data communications
Data communication : entails electronically exchanging data or information. It is the movement of computer information from one point to another by means of electrical or optical transmission system. This system often is called data communication networks.
Lecture 1 introduction to communication systems
This document provides an introduction to communication systems. It defines communication as the exchange of information from a source to a destination. An electronic communication system is defined as the whole mechanism of sending, receiving, and processing information electronically from source to destination. The main objectives of a communication system are to produce an accurate replica of the transmitted information and to transfer information between two or more points with minimum error. The basic elements of a communication system are an information source, transmitter, channel, receiver, and destination. Modulation is the process of modifying a carrier wave systematically by a modulating signal to make it suitable for transmission through a channel. There are two main types of modulation: analog modulation and digital modulation.
Telecommunication basics
Introduction for telecommunication technology basic terms and concepts.
Referring the wikipedia, Slideshare and lecture note of Fudan university.
I got a reference documents from Google.
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Fundamentals of Telecommunication
Telecommunication involves transmitting information over a distance using technology. There are two main types of modulation used: analog and digital. Analog modulation includes amplitude modulation (AM), frequency modulation (FM), and phase modulation (PM). Digital modulation includes amplitude-shift keying (ASK), phase-shift keying (PSK), and frequency-shift keying (FSK). Modulation is the process of altering a carrier wave to allow it to carry information. Key concepts in telecommunication also include frequency, wavelength, bandwidth, transmission media, signaling, switching, and multiple access.
telecommunication basic 1
Telecommunication involves the transmission of information over distances using communication systems. A communication system has three main parts: a transmitter that processes the input signal, a transmission channel as the medium, and a receiver that operates on the output signal. Messages can be analog, varying continuously over time like voice, or digital, consisting of discrete symbols. Transducers convert between message forms. Communication channels can be simplex, half-duplex, or full-duplex depending on transmission direction. Undesirable effects like noise, distortion, interference and attenuation affect signal quality during transmission. Modulation encodes information onto carrier waves to transmit signals over long distances.
Lec1 :- Data communication and network
Introduction
Fundamental characteristics
Components of data communication
Data representation
Data Flow
Data communications Class notes
This document provides an overview of data communication systems and their key components and concepts. It discusses the basic components of a data communication system including messages, senders, receivers, transmission medium, and protocols. It then describes various concepts such as line configuration (point-to-point and multipoint), network topologies (bus, star, ring, mesh), transmission modes (simplex, half-duplex, full-duplex), and modems. The document focuses on explaining these fundamental building blocks and concepts to understand how data is transmitted between devices.
WLAN
A wireless local area network (WLAN) uses radio frequency technology to transmit and receive data over the air, providing mobility and flexibility as an extension or alternative to wired networks. Key advantages of WLANs include productivity, convenience, lower installation costs and mobility. However, WLANs also have disadvantages such as higher costs for wireless network cards and access points, susceptibility to environmental interference, and lower bandwidth capacity compared to wired networks. Common applications of WLANs include use in corporate, education, medical and temporary settings.
Data communications
Data communication : entails electronically exchanging data or information. It is the movement of computer information from one point to another by means of electrical or optical transmission system. This system often is called data communication networks.
Lecture 1 introduction to communication systems
This document provides an introduction to communication systems. It defines communication as the exchange of information from a source to a destination. An electronic communication system is defined as the whole mechanism of sending, receiving, and processing information electronically from source to destination. The main objectives of a communication system are to produce an accurate replica of the transmitted information and to transfer information between two or more points with minimum error. The basic elements of a communication system are an information source, transmitter, channel, receiver, and destination. Modulation is the process of modifying a carrier wave systematically by a modulating signal to make it suitable for transmission through a channel. There are two main types of modulation: analog modulation and digital modulation.
Telecommunication basics
Introduction for telecommunication technology basic terms and concepts.
Referring the wikipedia, Slideshare and lecture note of Fudan university.
I got a reference documents from Google.
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The document discusses various aspects of wireless channels including:
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2) Small-scale fading parameters caused by multipath time delay and Doppler spread which can result in flat or frequency selective fading.
3) Characteristics of the mobile radio channel that introduce problems like fading and interference not seen in wired channels.
Pass band transmission
This document discusses various digital encoding and modulation techniques used for transmitting digital and analog data over transmission channels. It describes:
- Digital signaling, where digital data is encoded into a digital signal using techniques like NRZ-L, NRZI, etc. to minimize bandwidth and errors.
- Analog signaling, where analog or digital data modulates an analog carrier signal using techniques like ASK, FSK, PSK to transmit over analog lines.
- Specific digital modulation techniques like BPSK, QPSK, MFSK that encode digital data onto signal properties like phase, frequency or amplitude to maximize bandwidth efficiency and minimize errors.
- How analog modulation techniques like AM, FM, PM encode analog data onto an
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Overview of Modem
This document provides an overview of modems, including:
- Their history dating back to the 1950s for air defense communication needs.
- Their function of modulating digital data to analog signals for transmission and demodulating analog signals back to digital data.
- The main types based on connection, transmission mode, and speed of data transmission.
- The basic modulation techniques used including ASK, FSK, and PSK.
W-LAN (Wireless Local Area Network)
Wireless local area networks (WLANs) use radio waves to connect devices in a building or campus wirelessly. They integrate with wired networks through access points that bridge wireless and wired traffic. WLANs operate similarly to wired LANs but have some differences like lower security, limited bandwidth, and variable performance depending on location within the network coverage area. Common devices that use WLANs include tablets, smartphones and laptops.
Multiplexing
Multiplexing is a technique that allows multiple signals to be transmitted over a single data link by combining or dividing the signals. There are different types of multiplexing including frequency division multiplexing (FDM), wavelength division multiplexing (WDM), and time division multiplexing (TDM). FDM and WDM are analog techniques that modulate signals onto different carrier frequencies or wavelengths. TDM is a digital technique that assigns fixed or dynamic time slots to different signals to allow transmission over the same link.
Traffic Characterization
Traffic characterization parameters like bandwidth, delay, and jitter requirements are used to specify network traffic flows. Traffic shaping techniques like leaky bucket and token bucket regulate traffic into defined patterns to facilitate admission control and traffic policing. The leaky bucket traffic shaper uses a finite bucket that leaks data out at a constant rate to shape traffic bursts according to the bucket size and leak rate. Queue scheduling disciplines like weighted fair queueing determine which packet is served next to affect packet delay, bandwidth, and jitter. Resource reservation protocols negotiate quality of service guarantees by reserving required network resources.
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Underwater acoustic communication is a technique of sending and receiving message below water.[1] There are several ways of employing such communication but the most common is using hydrophones. Under water communication is difficult due to factors like multi-path propagation, time variations of the channel, small available bandwidth and strong signal attenuation, especially over long ranges. In underwater communication there are low data rates compared to terrestrial communication, since underwater communication uses acoustic waves instead of electromagnetic waves.
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Analog modulation
This document discusses different types of analog modulation techniques used in communication systems. It defines key concepts like signals, carriers, modulation and demodulation. There are three main types of analog modulation covered - amplitude modulation, frequency modulation, and phase modulation. Each works by varying a different property of the carrier signal (amplitude, frequency, or phase respectively) according to the information-bearing signal.
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ASk,FSK,PSK
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2. FSK conveys information by changing the instantaneous frequency of a carrier wave. It is less susceptible to errors than ASK but has a larger spectrum bandwidth. PSK varies the phase of the transmitted signal. BPSK uses two phases while QPSK uses four phases.
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This document provides an introduction to data communication and transmission. It defines data and describes how data is communicated from a source to a receiver. It explains the components of a data communication system including the message, sender, receiver, medium, and protocols. Protocols are defined as sets of rules that govern communication and their functions like data sequencing, routing, formatting, flow control, error control, and security are described. The modes of data transmission - simplex, half-duplex, and full-duplex - are defined. Serial and parallel transmission methods are also explained along with asynchronous and synchronous serial transmission types.More Related Content
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2) Small-scale fading parameters caused by multipath time delay and Doppler spread which can result in flat or frequency selective fading.
3) Characteristics of the mobile radio channel that introduce problems like fading and interference not seen in wired channels.
Pass band transmission
This document discusses various digital encoding and modulation techniques used for transmitting digital and analog data over transmission channels. It describes:
- Digital signaling, where digital data is encoded into a digital signal using techniques like NRZ-L, NRZI, etc. to minimize bandwidth and errors.
- Analog signaling, where analog or digital data modulates an analog carrier signal using techniques like ASK, FSK, PSK to transmit over analog lines.
- Specific digital modulation techniques like BPSK, QPSK, MFSK that encode digital data onto signal properties like phase, frequency or amplitude to maximize bandwidth efficiency and minimize errors.
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Telecommunication basics
Telecommunication involves the transmission of information using technology. It has basic elements including a transmitter, transmission medium, and receiver. Telecommunication occurs through various channels and technologies like telephone networks, cellular networks, and the internet. Common concepts include modulation, multiplexing, circuit switching, and packet switching. Modern cellular technologies progression includes 2G, 3G, LTE, and VoLTE networks that provide improved data speeds and services. ADSL uses frequencies on copper telephone lines to provide faster internet speeds than traditional modems.
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Overview of Modem
This document provides an overview of modems, including:
- Their history dating back to the 1950s for air defense communication needs.
- Their function of modulating digital data to analog signals for transmission and demodulating analog signals back to digital data.
- The main types based on connection, transmission mode, and speed of data transmission.
- The basic modulation techniques used including ASK, FSK, and PSK.
W-LAN (Wireless Local Area Network)
Wireless local area networks (WLANs) use radio waves to connect devices in a building or campus wirelessly. They integrate with wired networks through access points that bridge wireless and wired traffic. WLANs operate similarly to wired LANs but have some differences like lower security, limited bandwidth, and variable performance depending on location within the network coverage area. Common devices that use WLANs include tablets, smartphones and laptops.
Multiplexing
Multiplexing is a technique that allows multiple signals to be transmitted over a single data link by combining or dividing the signals. There are different types of multiplexing including frequency division multiplexing (FDM), wavelength division multiplexing (WDM), and time division multiplexing (TDM). FDM and WDM are analog techniques that modulate signals onto different carrier frequencies or wavelengths. TDM is a digital technique that assigns fixed or dynamic time slots to different signals to allow transmission over the same link.
Traffic Characterization
Traffic characterization parameters like bandwidth, delay, and jitter requirements are used to specify network traffic flows. Traffic shaping techniques like leaky bucket and token bucket regulate traffic into defined patterns to facilitate admission control and traffic policing. The leaky bucket traffic shaper uses a finite bucket that leaks data out at a constant rate to shape traffic bursts according to the bucket size and leak rate. Queue scheduling disciplines like weighted fair queueing determine which packet is served next to affect packet delay, bandwidth, and jitter. Resource reservation protocols negotiate quality of service guarantees by reserving required network resources.
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Underwater acoustic communication is a technique of sending and receiving message below water.[1] There are several ways of employing such communication but the most common is using hydrophones. Under water communication is difficult due to factors like multi-path propagation, time variations of the channel, small available bandwidth and strong signal attenuation, especially over long ranges. In underwater communication there are low data rates compared to terrestrial communication, since underwater communication uses acoustic waves instead of electromagnetic waves.
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The document discusses the basic components and types of communication systems. It explains that every communication system has 5 basic components: a data source, transmitter, transmission medium, receiver, and destination. It also describes different types of communication systems like point-to-point, point-to-multipoint, broadcasting, simplex, half-duplex, and full-duplex. Additionally, it outlines various transmission impairments that can occur over transmission mediums like attenuation distortion, delay distortion, thermal noise, intermodulation noise, crosstalk, and impulse noise.
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Data consists of raw facts and figures that can be processed into information. Data communication is the electronic transmission of data from one place to another using a medium. There are three components of data communication: a sender, medium, and receiver. Data can be transmitted in three modes: simplex (one-way), half duplex (two-way but not simultaneous), and full duplex (two-way simultaneously). Digital signals are transmitted as a sequence of voltages represented in binary form using a carrier wave. A computer network connects two or more computers to share resources through cables or wireless connections. There are three main types of networks: local area networks (LAN), wide area networks (WAN), and metropolitan area networks (MAN). Network top
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The document discusses computer network models and the physical layer of the OSI model. It provides an overview of the OSI model and its seven layers. It describes the physical layer in detail, including its responsibilities of defining the physical medium and interfaces. Various types of communication media are discussed, including twisted pair wires, coaxial cable, fiber optic cable, and wireless technologies like radio, microwave, satellite, and infrared. The physical layer controls transmission rates and modes and ensures bits are transmitted from one node to the next.
Analog modulation
This document discusses different types of analog modulation techniques used in communication systems. It defines key concepts like signals, carriers, modulation and demodulation. There are three main types of analog modulation covered - amplitude modulation, frequency modulation, and phase modulation. Each works by varying a different property of the carrier signal (amplitude, frequency, or phase respectively) according to the information-bearing signal.
Communication systems
In telecommunication, a communications system is a collection of individual communications networks, transmission systems, relay stations, tributary stations, and data terminal equipment (DTE) usually capable of interconnection and interoperation to form an integrated whole. The components of a communications system serve a common purpose, are technically compatible, use common procedures, respond to controls, and operate in union. Telecommunications is a method of communication (e.g., for sports broadcasting, mass media, journalism, etc.). A communications subsystem is a functional unit or operational assembly that is smaller than the larger assembly under consideration.
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Tcp ip
TCP/IP is an internet protocol suite developed by DARPA that defines the rules and standards for communication between electronic devices connected to the internet. It operates on four layers - application, transport, internet, and network interface. Key protocols include TCP and IP which work together to break data into packets and route them to the correct destination. ARP and RARP protocols map IP addresses to MAC addresses to enable communication between devices on a local network.
ASk,FSK,PSK
1. Digital modulation techniques are used to modulate digital information so that it can be transmitted via different mediums. Common digital modulation methods include binary amplitude shift keying (ASK), frequency shift keying (FSK), and phase shift keying (PSK).
2. FSK conveys information by changing the instantaneous frequency of a carrier wave. It is less susceptible to errors than ASK but has a larger spectrum bandwidth. PSK varies the phase of the transmitted signal. BPSK uses two phases while QPSK uses four phases.
3. The performance of digital modulation techniques can be compared using the energy per bit to noise power spectral density ratio (Eb/N0). Lower Eb/N0 values
Mobile ad hoc networks (manets)
Mobile ad-hoc networks (MANETs) are self-configuring networks of mobile routers connected by wireless links. They form a random, changing topology as routers move freely and unpredictably. MANETs are suitable for emergency situations where infrastructure is not available. They use routing protocols that are either table-driven and proactively maintain routes, or on-demand driven where routes are created as needed. Examples of protocols discussed are DSDV, AODV, DSR, and TORA. MANETs face challenges from their changing topology, but enable communication in infrastructure-less scenarios.
Digital Audio Broadcasting By SAIKIRAN PANJALA
Digital audio broadcasting (DAB) provides CD-quality sound, many station choices, and interference-free reception. It offers advantages over analog FM like high quality audio, error correction, and reduced multipath interference. DAB uses MPEG audio compression and OFDM modulation to transmit multiple signals over a single frequency band. While DAB coverage is still limited compared to FM in many areas, it provides better sound quality and has the potential to become the future of radio broadcasting worldwide as more countries adopt the technology.
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Data transmission can occur over short or long distances. There are three main factors to consider: transmission direction, transmission method, and data synchronization. Data transmission can be serial, with one bit sent at a time over a single channel, or parallel, with multiple bits sent simultaneously over multiple channels. Serial transmission works well for long distances but is slower, while parallel transmission is faster but over shorter distances. Transmission can also be simplex (one-way), half-duplex, or full-duplex. Simplex utilizes the full channel capacity but lacks two-way communication.
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DATA
The collection of raw facts and figures is called data. The word data is derived from the Latin language and it is plural of Datum. The text, numbers, symbols, images, voice, and video which are processed by computers and digital devices are called data. Data can be considered as unprocessed information.
COMMUNICATION
Communication is the process of sharing a message. A conversation between two people is an example of communication.
DATA COMMUNICATION
Data Communication is the process of transferring data electrically from one place to another. It is the process of exchange of data and information between two parties such as humans and electronic or computing devices.
COMPONENTS OF COMMUNICATION SYSTEM
A Communication system has the following five components.
Message
It is the information or data to be communicated. Common forms of information include text, numbers, pictures, audio, and video.
Sender
It is the device that generates and sends a message. It can be a computer, telephone handset, etc.
Receiver
Any particular digital electronic device can receive data in form of a message. The location of receiving computer is generally different from the sending computer. Like the sender, it can also be a computer, telephone handset, etc.
Medium
It is the channel or path through which the message is carried from the sender to the receiver. Some examples include twisted-pair cable, coaxial cable, radio waves, etc.
Protocol
Protocols are the rules and procedures by which computers exchange data on the network. The sender and receiver follow the same protocols to communicate with each other. In other words, a protocol is an agreement between two parties or vendors, using communication devices.
STANDARDS
Standards are the set of rules for data communication that are needed for the exchange of information among devices. It is important to follow Standards that are created by various Standard Organizations like IEEE, ISO, ANSI, etc.
CHARACTERISTICS OF DATA TRANSMISSIONS
Data communication has several characteristics but some are discussed below:
1.Signal type
2.Transmission mode
3.Direction of transmission
1.SIGNAL
A signal is an electromagnetic or electrical current that carries data from one system or network to another.
TYPES OF SIGNAL
There are two types of signals discussed below:
Analog Signals
Analog signals are continuously varying signals or waves that change with time and are used to represent data.
Characteristics Of Analog Signals
Amplitude
The amplitude of a signal refers to the height of the signal. It is equal to the vertical distance from a given point on the waveform to the horizontal axis. It is measured in volts.
Frequency
Frequency refers to the number of periods in one second or the number of cycles per second. Frequency is measured in Hertz (Hz).
Digital Signals
A digital signal is an electrical signal that is converted into a pattern of bits to represent a sequence of discrete values, at any given time.
Complete CHAPTER 3 Data Communication.pdf
CHAPTER 3
DATA COMMUNICATION
TERMINOLOGIES
DATA
COMMUNICATION
DATA COMMUNICATION
COMPONENTS OF THE COMMUNICATION SYSTEM
Message
Sender
Receiver
Medium
Protocol
STANDARDS
CHARACTERISTICS OF DATA TRANSMISSIONS
SIGNAL
TYPES OF SIGNAL
Analog Signals With Example
Characteristics Of Analog Signals
Amplitude
Frequency
Digital Signals With Examples
DIFFERENCE BETWEEN ANALOG AND DIGITAL SIGNAL
TRANSMISSION MODES (Asynchronous And Synchronous)
ASYNCHRONOUS TRANSMISSION WITH EXAMPLE
SYNCHRONOUS TRANSMISSION WITH EXAMPLE
DIFFERENCES BETWEEN SYNCHRONOUS AND ASYNCHRONOUS TRANSMISSION
DIRECTION OF TRANSMISSION
Simplex Mode With Example, Advantages And Disadvantages
Half-Duplex Mode With Example, Advantages And Disadvantages
Full-Duplex Mode With Example, Advantages And Disadvantages
DIFFERENCES BETWEEN THE TYPES OF TRANSMISSION MODES
DATA COMMUNICATION SPEED AND MEDIA
DATA COMMUNICATION SPEED
BANDWIDTH
Narrowband
Voice band
Broadband
DATA COMMUNICATION MEDIA
Twisted-Pair Cable With Reason for twisting
Coaxial Cable
Fiber Optics Cable With Advantages And Disadvantages
Microwaves
Terrestrial
Satellite
COMMUNICATION HARDWARE
MODEM
OSI MODEL
Application Layer
Presentation Layer
Session Layer
Transport Layer
Network Layer
Data Link Layer
Physical Layer
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The document discusses the basic components of communication systems and data transmission methods. It explains that every communication system has 5 basic requirements: a data source, transmitter, transmission medium, receiver, and destination. It then describes serial and parallel transmission methods and how asynchronous transmission is the most common type of serial data transfer as it allows packet switching and bandwidth sharing. Finally, it discusses different network topologies like bus, ring, and star and compares their advantages and disadvantages.
Communication and internet part1 by sadiqkhalif
Communication and internet part1 by sadiqkhalif
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CND_22634_UNIT1_MSBTE_Computer network and Data Communication
1.1 Data communication and its
characteristics
1.2 Components of data communication Transmitter, Receiver, Medium, Message, Protocol. Standards, Standard organizations. Basic block diagram of data communication system
1.3 Data Transmission: Serial, Parallel Synchronous, Asynchronous, Isochronous transmission
1.4 Transmission characteristics: Signaling rate, data rate, bit rate, baud rate
1.5 feed of computer networks, Network criteria, advantages of networking
1.6 Network topologies: Mesh, Star, Bus, Tree, Ring and Hybrid topologies - Schematic diagram, working, ad viint‹i disadvantages and applications
1.7 Network Classification:
Based on Transmission Technology
Point to-point, Multipoint, Broadcast
Based on physical size(scale):
PAN, BAN, LAN, MAN, WAN,VPN
based on Architecture: Peer to Peer, client Server, off a esC ent Se er over Peer-to-Peer Model.
Modes of Transmission
Achyut S.Godbole, “ Data Communications and Networks”, Tata McGraw-Hill Publishing Company Limited, Ninth reprint, 2007
Learning Guide of Determine Best Fit Topology LO 2.pptx
1. The document discusses data transmission modes, including simplex, half-duplex, and full-duplex modes.
2. It also covers topics like parallel and serial transmission, synchronous and asynchronous transmission, and circuit switching and packet switching for transferring data.
3. The Open Systems Interconnection (OSI) reference model breaks network communication into seven layers to standardize how different devices connect and exchange information.
Transmission Modes By Faisal Shahzad
1. Serial and parallel transmission are the two fundamental categories of data transmission. Serial transmission sends data one bit at a time over a single medium, while parallel transmission sends multiple bits simultaneously over separate media.
2. Serial transmission is generally better than parallel transmission for long-distance communication. It requires fewer wires, is more reliable with less noise interference, and is more suitable for applications that generate data asynchronously such as voice calls.
3. Voice over Internet Protocol (VoIP) uses serial transmission. It transmits digitized voice data over common serial transmission mediums like coaxial cable and optical fiber.
Transmission Modes By Faisal Shahzad
1. Serial and parallel transmission are the two fundamental categories of data transmission. Serial transmission sends data one bit at a time over a single medium, while parallel transmission sends multiple bits simultaneously over separate media.
2. Serial transmission is generally better than parallel transmission for long-distance communication. It requires fewer wires, is more reliable with less noise interference, and is more suitable for applications that generate data asynchronously such as voice calls.
3. Voice over Internet Protocol (VoIP) uses serial transmission because it can transmit voice data over mediums like coaxial cable and optical fiber that are designed for serial communication.
Introduction to Data Communication.pdf
Data communication involves the transfer of digital information between different points using various transmission modes and network configurations. Key aspects of data communication include serial and parallel transmission, simplex, half-duplex, and full-duplex transmission modes, and point-to-point and multipoint network configurations. Standards organizations like ISO, ITU-T, ANSI, IEEE, and EIA establish standards and recommendations for data communication systems and technologies.
Networking_and_Data_communication.pptx
This document discusses networking and communication. It defines key concepts like data communication, the basic elements of a communication system including sender, receiver and medium. It describes different data transmission modes like simplex, half-duplex and full-duplex. It also discusses digital and analog transmission, transmission media including wire pairs, coaxial cable and fiber optics. It covers computer networks, network topologies like star, ring and bus, kinds of networks including LAN, WAN and MAN. It provides examples of network applications and discusses internet usage concepts like ISP, browser, domain name and search engines.
10.data transmission
This document discusses different modes of data transmission between digital devices. It describes parallel transmission, which transfers all data bits simultaneously over separate lines and is faster but more costly than serial transmission. Serial transmission sends each data bit in sequence over a single line, making it less costly but slower. Transmission can be synchronous, sending multiple bytes at once without start/stop bits, or asynchronous, sending one byte at a time with start/stop bits. Modes of transmission include simplex (one-way), half duplex (one-way at a time), and full duplex (two-way simultaneous).
Data transmission
This document discusses various topics related to data transmission including:
- Data transmission involves transferring electromagnetic signals over a physical communication channel like copper wires or wireless channels.
- Transmission modes can be parallel (multiple bits sent at once) or serial (one bit at a time). Serial transmission is further divided into asynchronous and synchronous types.
- Asynchronous transmission groups data into start-stop bit sequences while synchronous transmission uses device-generated clocks for synchronization.
Chapter 1 introduction haramaya
This document provides an overview of wireless communications and mobile computing. It begins with definitions of communication, telecommunications, and the basic components and models of communication systems. It then discusses wireless transmission media like radio waves, microwaves, and infrared. The document outlines the history of wireless technologies from early systems like radio to modern cellular standards. It also describes different types of wireless services including broadcast, paging, cellular telephony, trunking radio, cordless telephony, and wireless local area networks.
Cn 317 1
1. A hub is a hardware device that allows multiple devices to connect to a single computer port, such as a USB hub connecting multiple USB devices. A switch directs data packets within a local area network between connected devices.
2. A router connects different networks and forwards data packets to their intended IP addresses, allowing multiple devices to share an internet connection.
3. A network interface controller (NIC) is a hardware component that connects a computer to a computer network.
Ch 01 part 1 - basic elements of telecommunication systems
This document provides an introduction to telecommunication networks and computer networking. It defines telecommunication as the transmission of signals over a distance for communication purposes. There are three main types of networks: local area networks (LANs), metropolitan area networks (MANs), and wide area networks (WANs). Communication systems allow information to be sent from point A to point B and vice versa, using transmission mediums like cables or wireless systems. Key components of communication systems include messages, senders, mediums, receivers, and protocols. The document also discusses analog and digital transmission, transmission modes like simplex, half-duplex and full-duplex, and common communication devices like modems and routers.
Similar to Presentation on DATA COMMUNICATION by Cj Subham (20)
CND_22634_UNIT1_MSBTE_Computer network and Data Communication
CND_22634_UNIT1_MSBTE_Computer network and Data Communication
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Presentation on DATA COMMUNICATION by Cj Subham
- 1. DATA COMMUNICATION PRESENTED BY- SUBHAM LAHIRY MAJUMDAR BRANCH:- E&TC REGD NO.:- F15011003035 SEMESTER:- 5TH SEMESTER
- 2. CONTENTS- Introduction Basic Parts of Data Communication Data Transmission Types:- i. Serial Data Transmission ii. Parallel Data Transmission Types Of Serial Data Transmission:- i. SYNCHRONOUS TRANSMISSION ii. ASYNCHRONOUS TRANSMISSION Data Transmission Modes:- i. SIMPLE ii. HALF DUPLEX iii. FULL DUPLEX BIBLIOGRAPHY CONCLUSION
- 3. What is data communication? Transmission of data from one place to another place is called data communication.
- 4. Basic parts of data communication Three components are essential in data communication. 1. Sender / Source 2. Data Communication Medium 3. Receiver / Sink
- 5. Basic parts of data communication Sender/Sourc e Receiver/Sink Medium
- 6. Sender / Source Sender or source is the data producer or the place where the data is produced for data transmission. E.g.: Imagine you call a friend of yours. Then you become the Sender or Source. Sender
- 7. Data Communication Medium The medium which is used to transmit data to the receiver. E.g.: In the example mentioned above, wireless …….communication becomes the data communication medium there.
- 8. Receiver / Sink The receiver is the person who gets data at the end. E.g.: Your friend is the receiver in the above mentioned example. Receiver
- 9. DATA TRANSMISSION TYPES Data transmission can be done in two ways. 1.Serial data transmission 2. Parallel data transmission
- 10. Serial data transmission •Data is transmitted here, one after the other (one bit at a time, in a serial way). •Such data transmission is done in bits in a computer network. •One wire is enough here for data transmission.
- 12. Parallel data transmission •Several bits are transmitted at a time •Several wires are used for this. •In most of the instances, use of at least eight wires for this is the normal way.
- 14. SERIAL TRANSMISSION IS FURTHER DIVIDED INTO 3 TYPES:- ASYNCHRONOUS TRANSMISSION SYNCHROMOUS TRANSMISSION ISOCHRONOUS TRANSMISSION
- 16. ASYNCHRONOUS TRANSMISSION:- In asynchronous transmission 1-byte of data is transmitted at a time. Bit synchronisation is made possible by using start and stop bits. Start bit indicates the beginning of data. It is usually a zero. Stop bit indicates the end of data. Addition of start and stop bit increases the no. of data bits. Hence more bandwidth is required for data transmission. There is an idle time between the transmission of data bytes. This idle time is known as gap. Ex:- (keyboard and modem)
- 18. SYNCHRONOUS TRANSMISSION In synchronous transmission blocks of data are transmitted. It does not transmit start and stop bits. There is no gap between the various bytes in the data stream. As the bytes are placed on the link without any gap it is the responsibility of the receiver to separate the bits stream into bytes so as to reconstruct the original information. In order to receive data error free the receiver and sender operates in same clock frequency. It is faster as compared to asynchronous transmission. It is costlier than asynchronous transmission. It is used for high speed data communication between computers.
- 19. Data Transmission Speed The speed of data transmission is measured in Bytes per second (bps) Kbps (kilobytes per second) Mbps (Megabytes per second) Gbps (Gigabytes per second).
- 21. Simplex •Data is directed one way only. •There is no any space for data transmission to be directed the other way. Examples: Television transmission Radio transmission. From your computer to the printer. From the mouse to your computer. •Data transmission is always done here only from sender to receiver.
- 22. SIMPLEX-EXAMPLES One way only Television transmission
- 23. Half-Duplex Data can be directed one way at a time. The data flows in one direction or the other, but not both at the same time. Example: Walkie-talkie. Where only one party can talk to the other at a time
- 26. Data can be transmitted both ways at a time. Example: Telephone. Both ways at a time Duplex/Full duplex
- 28. CONCLUSION New forms of business involving data, knowledge and communication will result in a Information Revolution. Computer networks will lift the current businesses in the agricultural and industrial sectors up to a higher level. Fast communication between people, accurate control and a better co-ordination of tasks will enable companies to offer products and services that are exclusive and of a better quality.
- 29. BIBLIOGRAPHY- 1. WIKIPEDIA 2. DATA COMMUNICATION NOTES 3. Www.GOOGLE.COM 4. TEXT BOOK OF DATA COMMUNICATION (BY B.A. FOROUZAN) 5. Text book of ADVANCE COMMUNICATION(BY S.RAPPAPORT)