Carrier
both but for analog usually a frequency Carrier is required
Analog and digital signals can both be transmitted wirelessly. Wireless internet (Wi-Fi), for instance, uses digital. AM and FM Radio uses analog. Cell phones are digital. Cordless phones can be digital or analog.
In Analog communication, the analog message signal modulates some high carrier frequency inside the transmitter to produce modulated signal.this modulated signal is then transmitted with the help of a transmitting antenna to travel through the transmission channel. At the receiver, this modulated signal is received and processed to recover the original message signal. Example: AM , FM radio transmission an TV transmission. In digital communication, the message signal to be transmitted is digital in nature. This means that digital communication involves the transmission information in digital form Example: ASK, FSK, PSK.
it means another word for exicting
Digital sensors produce digital output (0 or 1) which can be easy to communicate directly with a microcontroller. Analog sensors provide analog outputs which one must firstly digitize to sense the level. Analog sensors are generally more accurate.
Analog signals are transmitted as electrical waves.
by analog to digital,digital to analog signal
Analog signals are transmitted as electrical waves.
Analog is changed in to digital so it can be transmitted easily.
the digital signal is converted to analog signal after using by transmitted antenna
both but for analog usually a frequency Carrier is required
An analog cellular system transmitted a caller's voice by converting the sound waves into a wave pattern
In Analog communication, the analog message signal modulates some high carrier frequency inside the transmitter to produce modulated signal.this modulated signal is then transmitted with the help of a transmitting antenna to travel through the transmission channel. At the receiver, this modulated signal is received and processed to recover the original message signal. Example: AM , FM radio transmission an TV transmission.
Digital images are transmitted on computer networks by first compressing them to reduce their size. JPEGs are an example of compressed image files.
As compared to digital audio which consists of a stream of 1's and 0's, analog audio is transmitted via a physical quantity, such as a voltage. Analog recordings are physically stored, for example in a vinyl record, the record face consists of small pits and valleys that are then converted into sound. Fluctuations in electrical or magnetic fields is another method of storing analog audio.
Analog and digital signals can both be transmitted wirelessly. Wireless internet (Wi-Fi), for instance, uses digital. AM and FM Radio uses analog. Cell phones are digital. Cordless phones can be digital or analog.
Modem (from modulator-demodulator) is a device that modulates an analog carrier signal to encode digital information, and also demodulates such a carrier signal to decode the transmitted information. The goal is to produce a signal that can be transmitted easily and decoded to reproduce the original digital data. That is the definition of Layer 1.