Show More Ask Question

2 Answers

Answer :

The screen of mobile is made up of light emmiting diode and photo diode.which sens the darkness but now a days it only sens human touch it depends on human electric field.led are work on different freqency they are in make one picsle from red,green,blue led and gives every type of color bye there particular combination at received frequency.
Like 0 like

Answer :

There  are  two  major  type  of  screen  type ;LED,LCD. They  are  embedded  widh  sensors  which  opperate  at   diffrent  principles  according  to  the  manufacture's  choice  .Some  opperate  in  such  away  that  when  you  tourch  the  screen  with  your  finger  there  is  a voltage  drop  at  that  point  hence  a  signal  is  sent  to  the  processing  unit  . Some  also  opperate  when  the  light  emmited  by your  screen  is  blocked  by  your  finger.

Like 0 like
Next Page →


Description : A smart classroom is a teaching space which has (i) Smart portion with a touch panel control system. (ii) PC/Laptop connection and DVD/VCR player. (iii) Document camera and specialized software (iv) Projector and screen Select the ... (C) (i), (ii) and (iii) only (D) (i), (ii), (iii) and (iv)

Answer : Answer: B

Description : How to Touch Up Car Paint ?

Answer : How to Touch Up Car Paint You nearly cry out in dismay when you saw that your car with the shiny and perfect paint job now has a scrape on it. This is annoying, but there's a way to fix this. ... is not enough, you can use a hairdryer to heat the area up, giving it a smoother and shinier finish.

Description : How to Touch Type ?

Answer : How to Touch Type Touch typing is the skill of typing legibly on a keyboard without having to look at it. What was once a skill attributed to secretaries, now a necessity in our web-connected world. Here's how ... as you type, not at the keyboard. You'll get used to it and master it in no time.

Answer : It is stepping up or down the voltage, to step up voltage, it has few coils in primary core than secondary, to step down voltage it has more coils in secondary than primary