8/13/2019 This Very First Lesson is Intended to Make You Learn About Basics of Cell Phones

1/2

this very first lesson is intended to make you learn about basics of cell phones

hi dear students,

in the first place of your course i would like to introduce you about cell phonebasics and the very basic techniques with the cell phone works.

while beginning to the main technology of cell phones you should know aboutthe basic sections of a mobile phone. A conventional mobile phone contains threemain sections prescribed as under.

1. Radio Section2. ower section!. computer section

Radio section

A radio section is based on two main "ircuits.

#ransmitter

Reciever

A simple mobile phone uses these two circuits to correspond to an othermobile phone. A #ransmitter is a circuit or device which is used to transmit radiosignals in the air.and a reciever is simply like radios which are used to recievetransmissions$Radiation% which is spread in the air by any transmitter on a specificfrequency.

#he two way communication is made possible by setting two transmitters andtwo recievers sycroni&ed in this form that a trasmitter in a cell phone is syncronisedwith the frequency of other cell phone's recieving frequency same like thetransmitter of second cell phone is syncronised with the recieving frequency of firstcell phone. So first cell phone transmits its radiation in the air while the other phonelistens it and same process is present in the opposit side. so these hand held two cellphones correspond to one another.

the technology used in these days is a little bit different but it is based on thebasic theory prescribed before. the today's technology will be discussed in later on.

ower Section

A power section in mobile phones is designed to handle energy matters that iscosumed in mobile phones.#here are two main sub sections in a single power section.

ower (istribution and switching section

"harging Section

8/13/2019 This Very First Lesson is Intended to Make You Learn About Basics of Cell Phones

2/2

A power distribution section is designed to distribute electricity to the othersections of a phone. this section takes power from a battery $which is figuredcommonly !.) *olts%and in some places it is steped down to various volts like 2.+ *1.+* 1.)* etc.while on other place it also steps up the voltage like .+ *. this sectionis commonly designed around a power -"$and integrated circuit% which is used todistribut and regulate the voltage used in other components.

#he "harging section is based on a charging -" which takes power from aneternal source and gives it to battery to make it again power up when it iseausted.this section uses conventiolly ). * from an eternal battery charger andregulates it to /.+* wile giving it to battery. #he battery is made charged by thisprocess and it is ready to use for the net session$a battery session is a time which isprovided by the maufactrur of a cell phone for standy by condition of a mobile phoneor talk condition.%

"omputer Section

a computer section is used in mobile phones to handle decision making

applications like making decision the phone should be power on when its powerswitch is pressed down one time and on the other time the phone should be poweredoff. this section is commonly based on around three main components

RA0$ Random Access 0emory%

R0,lash$Read nly 0emory

"3$ "enteral rocessing 3nit%

#he very first part is a memory component which commonly saves in it self userdefined setting of a phone and contacts 4umbers. the informations in this memorychip is editable by user easily

#he second "omponent contains mobile phone's operating system which is noteditable bye user but it is only in special conditions

#he #hird "ompnent is as like a simple brain used to understand differnet situationsad to make decisions and to hold control on other components as well as sections

4ote5 #he special terms used in this lesson should be asked for if not understoodable