32page

24 ^ll 1 S CAD/CAM ^l ,- EJ 7tl = (3) s4e 4:-521o1 a4 4 q ^=zI olE F4g q g H!^I^l z)z)r4 olF^l a+= 7I'; g q ^=zll oltr_, "fg jrJ+^l7l= 5cg 714. frzl 4tlEg "l+6}q, F+€ qE +Cg +c6l= "J4g ^I-S+trI. [:23 l-14]- H"l 'J+g= 7le zl]Hg U_€ at 9l+. (a)E E-it=l6}zl gdEl= pol g+q 1Z1 yJ*zl= F+.J +, x_yirJEql uJajalE E ol +C 9 q, ol =+ Zl +^d g t^l vJ *9 zzl uJ +rzl 4l 5.+^l z) g gNl x-yirJ E ql uJ a3alEt 6Iq, Hg rJrl zdtrrl 7JEl. (b)= Hol t,2^l .rJ"JzlE =l4Er"srl gol E+ ++q= 449 _ H _q aa _ 9l+. ol+ rJg =Ag * = EdE- "-!;ilE olqil l;fs ol-U +ZI tl4s =rt]6IE^J sEql ,]] + "Je + g+ - ,? zl EltlEg "J E . _ 4 zJ (liquid crystal)ol zlz dlq, a_ zll d -tr-= TN(twisted nematic)$ y*"] ,l|-ga]L:z 9.1tr1. YJ E *ol F4 u q= a+ N (b) H"l +c zlEg= A+ reJ 1-14 e45 trl^=ellol(LcD) 7= (4) cRre+ LCD9 *Ed Y*g tulz|gol LCD s-qEl= d"J6Ij1 gLgqls. E+6I-z, =g 714+ ^i ,qlEql CRTE- +"JaI= 4Azl y*q+, LCD- Hlt} 7l4qlE E+6Ij1 el +d ,4lEql .r-l.r.l aJ -H-#ol 5-z gl+. :7 *.Bdg (_g r-2>s+ ,Jtrl. Ela + ul# qi -a