Telecommunication basic foundations

Telecommunication basic foundation is our topic for today to understand telecommunication we first need to cover the basics of signals and electricity here we will not go in depth of signals and electricity but basics concept of signals and electricity so that we can easily understand telecommunication basics foundations you can also refer previous post Telecommunication technology Some basic terms
Transmit  to send (Information, sound etc) in the form of electrical signals to a radio,TV, computer etc.

Transmission the act or process of sending electrical signals to a radio, TV, Computer etc see below given picture.

 the key point here is we want to send information data, voice from one device to other device this is how a telecommunication work whether talking on mobile, phone or watching TV, listening radios sending data through email getting data from one device to other device or one location to other location there are two types of signal which are use in telecommunications one is Analog and other is Digital to understand signal we have to first understand electricity if you remember electricity is movement of electrons if you recall our study of high school physics or chemistry course atoms are composed of electron(-) , proton(+) and neutron electron has negative charge proton has positive charge and neutron has neutral charge proton and neutron are in the nucleus and electron revolves around outer most orbit of atoms. electricity is movement of electron for electricity to flow there must be difference between two points if both points having same level electricity will not flow there are some important terms to know.Volts :  potential difference between two points Amps : the currentWatts : the powerOhms : the resistance to the flowthe most common ways to explain there are as belowVoltage → water pressureAmps → how fast water is flowing Ohms → how big the hose is see the picture below for signal types.                                             Analog signal some basic properties  Amplitude : measure of signal strength at any given point the height of the wave for example amplitude should consider as volume if you talk softly the height of the wave or amplitude is small if you talk Lauder the amplitude is going to increase or bigger wave. Frequency :  how fast the wave comes the number of times the wave’s amplitude cycles from the starting point from highest amplitude, lowest and back to starting point over a fixed period of times measured in cycle per second or Hertz (Hz) the average human can hear between 20 to 20,000 Hz as we get older our ability to hear higher frequency decreases and a younger person able to hear higher frequency. Wavelength : the distance between corresponding points on the wave cycle the higher the frequency shorter the wavelength the faster the signal the shorter the distance between two points. Digital :digital is 0 or 1 either a signal is sent or not sent made of pulses of positive or zero voltage your computer mobile TV all work in digital exchange the data in digital form so we have analog and digital signal how develop and exchange now we will continue in next post i hope you have enjoyed learning  Telecommunication basic foundations thanks for reading. Dated 15th sep 2018

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