function boundconductancecal
h1=findobj(0,'tag','bond');
m1=findobj(h1,'tag','EditText1');
kbk=get(m1,'string');
kb=str2num(kbk)
m2=findobj(h1,'tag','EditText2');
gamak=get(m2,'string');
gama=str2num(gamak)
m3=findobj(h1,'tag','EditText3');
bk=get(m3,'string');
b=str2num(bk)
if strcmp(kbk,'')|strcmp(gamak,'')|strcmp(bk,'')
msgbox('you should enter all required data')
else
cb=kb*b/gama
msgbox(num2str(cb),'bond conductance')
end