Introduction to Electronics Communication Flashcards
What are the types of Communication
Verbal, Non Verbal, Print, Electronic Processes
What is the chain system of communication by blocks based on Ma’am Joyce Powerpoint
Information to Transmitter to Medium to Receiver
Electric Component that Converts an information to an electronic signal
Transmitter
A form of Channel Impairment, an unwanted signal that interferes with the communications during the channeling of the information
Noise
An electronic components that consist of oscillators, amplifiers, tuned circuits, filters, modulators, frequency mixers, frequency synthesizers, and such
Transmitter
What are the 3 types of Channel
Electrical Conductors, Optical Media, Free Space
A simplest type of channel that uses a pair of wires like coaxial cable for tv signals or twisted-pair cable for LAN connections
Electrical Conductors
Type of Medium/Channel that uses fiber optic cable that carries message thru light waves, most used in internet connection
Optical Media
Type of Medium/Channel that are mostly used by radio and mostly carries electromagnetic signals to travel over a very long distance
Free Space
A collection of electronic component that consist of oscillators, amplifiers, mixers, tuned circuits, demodulator/detector that recovers original intelligence/information from the modulated carrier
Receiver
Information source = Source Encoder - Channel Encoder - Modulator = Channel = Demodulator/Detector - Channel Decoder - Source Decoder = Information Sink
Communications System
A electronic component that both function as Transmitter and Receiver
Transceiver
3 forms of Channel Impairments
Attenuation, Noise, Distortion
Form of Channel Impairments thru the loss of signal strength (lowering of volume)
Attenuation
A channel impairment that alters the basic waveform
Distortion
Type of Distortion that changes the amplitude or phase without adding new frequencies.
Linear Distortion
Type of Distortion when a new frequency is added to the waveform causing an slight interference
Non-Linear Distortion
A type of signal that is continuous change of voltage/current
Analog signal
A type of signal that is not continuous but increment changes like a step
Digital Signal
A simplest way of Communication that only allows one way of communication(only receive/ only transmit) example: television, Radio
Simplex
A form of two-way communication that allows both connection to transmit and receive but only one at a time
Half Duplex
A form of two-way communication that allows both connection to transmit and receive simultaneously
Full Duplex
A transmitting technique that converts information/intelligence into a more compatible form for the medium/channel
Modulation
A transmitting technique that allows more than one signal to be transmitted on the same medium
Multiplexing
A Transmission of a signal that are not converted into a high frequency signal and are mainly used for short distances (LAN network)
Basedband Transmission
A Transmission of signal that transmit data, voice, and video across long distances and at high speeds. Common mediums of transmission include coaxial cables, fiber optic cables, and radio waves
Broadband Transmission
A type of modulation that varies the amplitude of the signal
Amplitude Modulation
A type of modulation that varies the frequency of the signal
Frequency Modulation
A type of modulation that varies the phasing of the signal
Phase Modulation
A type of modulation that converts data into frequency-varying tones
Frequency-shift Keying
A type of modulation that introduces a 180 degree phase shift
Phase-shift Keying
A type of modulation that translate data from ditigal to analog and vice versa
Modem
Opposite of Multiplexer
Demultiplexer
A type of Multiplexing that fits the all the different frequency signal into a bandwidth channel and then to be transmitted
Frequency-division multiplexing
A type of Multiplexing that sequentially sends frequency signals one at a time in a fast rate
Time-division multiplexing
A type of Multiplexing that are converted to digital data that is coded by binary codes.
Code-division multiplexing
A range of waves that has both electric and magnetic field that oscillates
Electromagnetic Spectrum
A rate/number of cycles a wave has propagated
Frequency
A rate/number of cycles a wave has propagated
Frequency
A distance occupied in 1 cycle of wave, inversely proportional with frequency
Wavelength
Speed of light
300,000,000 m/s
A portion of electromagnetic spectrum occupied by a signal, Upper Frequency - Lower Frequency to get this
Bandwidth
