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What telecommunications hardware is needed to convert diitals signals to analog signals?
MODEM:A modem takes digital signal from computer and converts them to analog for the phone and reconverts them back
Is triangular wave is analog or digital?
It's usually analog, but digital signals can be converted, if needed.
What hardware is needed to convert the digital signal of the computer to signals that can be transmitted through telephone lines?
modemmo-dem =MOdulatorDEModulator
What telecommunications hardware is needed to convert digital signals to anolog signals?
A Demodulator (MODEM)
Why must sound card and video on a PC be converted from analog to digital?
Primarily because digital systems are more accurate. Additionally, digital technology is replacing older systems with modern devices because digital devices are often much smaller, and require less maintenance.
Why is there a need for an AD converter in fiber optics communication?
An analog-to-digital (AD) converter is needed in fiber optics communication to convert analog signals into digital format for processing and transmission. In digital fiber optic systems, signals are encoded as digital data bits for better noise immunity, signal integrity, and compatibility with digital processing equipment. The AD converter captures the analog signal and converts it into binary data that can be easily transmitted and interpreted in the digital domain.
Do you still need a HD antenna on your TV if it has ATSC built in to it?
To receive Broadcast Television Signals of NTSC Analog or ATSC Digital a television antenna is needed. If the TV has ATSC built in , then a converter box will not be needed.
Need of demodulation?
Demodulation is needed with modulation becoz modulation it is converting analog to digital signal n we can't understand digital. That's why we require digital to analog converter or demodulator.
Why is a modem needed for analog telephone lines?
A modem (which stands for Modulator-Demodulator) converts digital data from the computer to analog data compatible with the telephone system. The analog signal is converted back into digital data on the other end of the call.
What happens when you convert an analog signal to a digital?
Analog signals are found all around us in nature. Light levels, for example, have infinitely variable levels and when captured by cameras are represented as a voltage that can also have an infinite number of levels. Computers are not good at handling analog values so they are converted to numbers. An analog video signal is normally in the voltage range of 0V - 1V. An analog to digital converter samples the analog level and converts it to a number in the range of 0 to 256 or 0 to 1024. Instead of an infinite number of different levels, the digital signal will be limited to one of the numbers in the range. The sample is taken millions of times each second and a stream of numbers is created to represent a moving image. Computers are much happier using the numbers and can manipulate the data with ease. Additionally, they numbers can be stored in memory or on a hard disk and can be retrieved whenever needed. Analog to digital conversion is a complex discipline and in practical applications, the process is more complex than described here although the principles do not change.
What are the needs for conversion between analog and digital data?
We like to convert audio signals to a digital signal. First, as a digital signal, it can be moved around many times without degrading during transmission. Old vinyl records would eventually wear out and get scratched. Tapes would wear out and the signal would be degraded. Not so with an audio track that is digitized. The data string is easier to "protect" than the vulnerable records or tapes. It's not going to degrade or "wear out" from playing. Also, digital audio can be stored as a digital file in contemporary computer- or microprocessor-based storage systems. This kind of storage can suggest that it can be kept around indefinitely. Certainly since it's a digital data string, it can be stored a "long time" without fear of degradation of the media, like with records or tape. Another advantage of converting audio to a digital signal (and a biggie) is that as a digital signal, it can be processed to achieve almost limitless effects. The clever designs of digital signal processing software make these applications powerful manipulators of any audio that is pushed through them in the form of a data string. The end product is constrained by almost nothing but the creativity (and the skill at using the software) of the person sitting at the keyboard of the computer. Got links if you want them. They are to related articles posted by our friends at Wikipedia, where knowledge is free.
Which has greater resistance to transmission errors Binary signaling or Analog signaling?
digital signals (usually binary coded) can include extra information that can be used for error detection or even correction. this allows recovery of the original signal, either by requesting retransmission or by directly correcting the error. analog signals can't include any extra information needed for this purpose. it is impossible to distinguish an error from the original data.
