Digital communications are data transfer (a digital bit stream or a digitized analog signal) through a point-to-point or point-to-multipoint communication channel. Examples of such channels are copper wires, optical fibers, wireless communication channels, storage media and computer buses. The data is represented as an electromagnetic signal, such as an electrical voltage, a radio wave, a microwave or an infrared signal.
Analog or analog transmission is a transmission method for transmitting voice, data, image, signal or video information using a continuous signal that varies in amplitude, phase or some other property in proportion to that of a variable. Messages are represented by a sequence of pulses by means of a line code (baseband transmission), or by a limited set of continuously varying waveforms (passband transmission), using a digital modulation method. The passband modulation and corresponding demodulation (also known as detection) is carried out by means of a modem equipment. According to the most common definition of digital signal, baseband and passband signals representing bit streams are considered as digital transmission, while an alternative definition considers only the baseband signal as digital and digital data transmission Passive as a form of digital-to-analog conversion.
The transmitted data may be digital messages from a data source, for example a computer or a keyboard. It may also be an analogue signal such as a telephone call or a video signal, digitized in a bit stream, eg using pulse coding (PCM) coding or more advanced source coding (analog-to-digital conversion and compression of data) . This source coding and decoding is performed by codec equipment.
Digital Electronics Seminar Topics
• Security in Embedded Systems
• Ensure wireless underwater communication networks
• Safe electronic voting system based on steganography
• Lunar Reconnaissance Orbiter Demonstration of RF technology in miniature
• Phonet
• Electronic toll collection
• Microbivorous
• Electronic countermeasures
• Barcodes
• Audio projector
• Brain Gate
• Brain chips
• Silicon Memory
• Embedded web server based on arms
• Multipurpose robot
• Gateway to the road
• Polytronics
• Infrared plastic solar cell
• Mobile Solar Charger
• Paper Battery
• Bio Battery
• Solar Tree
• Easy to swallow wireless telemetry
• Stratellite
• Medical Mirror
• AntHocNet
• Ivy Bridge
• Bump Technology
• Esteganálisis
• Surface Mount Technology
• Advances in Magnetic Field Sensors
• Acoustic echo cancellation
• 8K High Resolution Camera System
• HSPA high-speed packet access
• Radio communication of the mobile train
• Facial recognition using the neural network
• Data loggers
• Concentration of collectors
• Bluetooth network security
• Artificial Intelligence at Power Plant
• Automotive Embedded System
• Third generation solid state drives
• Bubble energy
• Vehicle-to-Grid V2G
• E-Waste