Communication Technology

Learning Standard 3. Communication Technologies Ideas can be communicated through engineering drawings, written reports, and pictures. 3.1 Identify and explain the components of a communication system, i.e., source, encoder, transmitter, receiver, decoder, storage, retrieval, and destination. 3.2 Identify and explain the appropriate tools, machines, and electronic devices (e.g. drawing tools, computer aided design, and cameras) used to produce and/or reproduce design solutions (e.g., engineering drawings, prototypes, and reports) 3.3 Identify and compare communication technologies and systems, i.e., audio, visual, printed and mass communication. 3.4 Identify and explain how symbols and icons (e.g., international symbols and graphics) are used to communicate a message.

Learning Objectives At the conclusion of the unit students will be able to: Define & understand the difference between communication & communication technology Understand the 5 things that must be considered when creating a message in order for the message to be effective Identify & understand the different types of communication Understand what an icon/symbol is & why they are important to communication technology

Learning Objectives Identify & explain the components of a communication system Understand why the following people are important to the advancement of communication technology: Johannes Gutenberg Alexander Graham Bell Philo Farnsworth Martin Cooper Tim Berners-Lee Jack Dorsey Grace Hopper Steve Jobs Bill Gates Nick Woodman

Communication Technology Exchange of ideas, information, & opinions between people Communication Technology Uses equipment & systems to send and receive information Allows humans to exchange (or share) ideas, information, and opinions easier

Message Design Information (ideas) being exchanged must be understood in order for communication to be effective… In order to create an effective message, the person creating it needs to be aware of 5 things: Purpose of the Message: WHY have you created the message

Message Design Intended Audience: WHO will be receiving the message Nature of the Message: WHAT is the message about

Message Design Medium Being Used: HOW will the message be delivered (TV, Radio, Billboard, Internet, Text Message, Email, Music, etc…)

Message Design The Language: The language must be understandable to the intended audience to allow clear communication

Types of Communication Technology

Graphic Communication Visual messages using pictures & symbols Examples: Magazines, newspapers, TV, messages on clothing, billboards, road signs, computer images

Wave Communication Sound Waves: Vibrations traveling through the air that can be heard

Examples of Sound Wave Technology Wave Communication Examples of Sound Wave Technology Television Radio Telephone

Wave Communication Light Waves: Message is transmitted as waves of light that can be seen Examples: Television Computer Screen

Wave Communication Electromagnetic Carrier Waves: Message is converted into electrical signals & carried through the atmosphere. Large antennas & dishes transmit & receive the signals. Example: Television Radio Cell Phone calls

Mass Communication Communication to a large number of people at one time

Mass Communication Began with the invention of the Printing Press Invented by Johannes Gutenberg in 1448

Mass Communication Before the Printing Press: Books were written by hand This was a very slow process As a result books were expensive Only wealthy people could afford them

Mass Communication The Printing Press made it possible for common people to have access to books for the first time Which gave them access to knowledge

Telecommunication Communication over a distance Examples: Phones, televisions, radios, satellites

Multimedia Communication Combining text, sound & images into one presentation This creates a more complete & entertaining message Example: Books, Computers, Video games, Television, Power Point Slideshows

Icons & Symbols Icon/Symbol: A picture or image that is used to represent something else Allows people to communicate without using words

Icons & Symbols

Alexander Graham Bell Born March 3, 1847 in Edinburgh, Scotland Worked as a teacher for deaf students in Boston & became a professor at Boston University

Alexander Graham Bell Obtained the first patent for the telephone on March 7, 1876

Alexander Graham Bell Made first phone call to his assistant Thomas Watson who was working in another room on March 10, 1876

Alexander Graham Bell Created the Bell Telephone Company on July 9, 1877 with Watson and several other business partners

Alexander Graham Bell The first long distance call between New York City & Chicago was made in October 1892 The first long distance call across the United States was made between New York City & San Francisco on January 25, 1915

Alexander Graham Bell Interestingly, Bell considered the telephone an intrusion and would not have one in his Study

Philo Farnsworth Born in Utah in 1906 First person to create a fully functional all-electronic television system & demonstrate it to the public in 1927 Holds over 165 patents

Martin Cooper Born in Chicago in 1928 Worked as a General Manager for Motorola’s Communication Systems Division

Martin Cooper Made the first Cell Phone call on April 3, 1973 in New York City The call was made to his friend & competitive rival Joel Engel who was working for Bell Labs who was also working to develop a cellular phone

Martin Cooper It took 10 years for the cell phone to be ready to sell to the public (1983) This first publicly available cell phone weighed 16 ounces (1 pound) & sold for $3500

Martin Cooper Today Cooper is the CEO of ArrayCom, a company that he co-founded in 1992 ArrayCom develops more reliable and inexpensive cellular antennas

Tim Berners-Lee Born in England in 1955 CERN employs thousands of Nuclear Research Scientists & engineers worldwide Worked as a computer scientist for CERN in Switzerland

Tim Berners-Lee In 1989 Tim Berners-Lee was working to come up with a way for workers at CERN to share documents

Tim Berners-Lee Tim Berners-Lee wrote the first “browser” software using hypertext Hypertext: One piece of computer text can be linked with another Text & documents could be linked together – workers at CERN could share information

Tim Berners-Lee He called his program “World Wide Web” which worked like current browsers except there were no pictures or color monitors

Tim Berners-Lee The first website went online in 1991 CERN announced that it could be used by the public for free in 1993

Tim Berners-Lee The World Wide Web has become arguably most powerful communication medium the world has known Today Berners-Lee works at MIT in Cambridge, Massachusetts & is the leader of an organization (W3C) that is responsible for overseeing the Web’s continued development

Bill Gates Born in Seattle, Washington in 1955 Attended Harvard from 1973 - 1975 Co-founded Microsoft in 1975 with Paul Allen Microsoft became the world’s largest PC software company "Bill Gates June 2015" by DFID - UK Department for International Development - https://www.flickr.com/photos/dfid/19111683745/. Licensed under CC BY 2.0 via Commons - https://commons.wikimedia.org/wiki/File:Bill_Gates_June_2015.jpg#/media/File:Bill_Gates_June_2015.jpg

Bill Gates Microsoft introduced the Windows Operating System in 1985 At one time 90% of all PCs were operating with Windows

Bill Gates Co-founded the Bill & Melinda Gates Foundation in 2000 Goals: Reduce Poverty & increase Healthcare worldwide

Components of a Communication System Source Where the information begins Where the signal is sent from

Components of a Communication System Source Changes the information (message) into code so it can be sent (transmitted) Encoder

Components of a Communication System Encoder Sends the encoded message over a channel Transmitter Channel Channel: The medium or link through which a signal is sent from the transmitter to the receiver Examples: wire cables, fiber-optic cables, wireless wave communication

Components of a Communication System Channel Takes in the encoded message sent through the channel by the transmitter Receiver

Components of a Communication System Receiver Translates the encoded message into useful information so that it can be understood Decoder

Components of a Communication System Source Where the information begins Where the signal is sent Encoder Changes the information (message) into code so it can be sent (transmitted) Transmitter Sends the encoded message over a channel Channel Channel: The medium or link through which a signal is sent from the transmitter to the receiver Examples: wire cables, fiber-optic cables, wireless wave communication Receiver Takes in the encoded message sent through the channel by the transmitter Decoder Translates the encoded message into useful information so that it can be understood

Components of a Communication System Many communication systems have 2 additional components: Storage: Message is saved for later use Retrieval: Message is recalled when needed Examples: Voicemail / Telephone answering machines / Cameras / iPods / Books / Notebooks / CDs / DVDs / Blu-rays / DVRs / Video Games / Computer hard drives / Flash drives