awk convert first character to lowercase

echo example | awk '{$1=toupper(substr($1,0,1))substr($1,2)}1'
Example		#Example first upppercased outputed

echo EXAMPLE | awk '{$1=tolower(substr($1,0,1))substr($1,2)}1'
eXAMPLE		#Example first lowercased outputed

echo EXAMPLE | awk '{$1=tolower(substr($1,0,1))substr($1,2)}1'
eXAMLPLE		#Example first lowercased outputed