设计全加器时,采用例化语句完成,已有半加器元件hadd,请补充以下全加器的程序完成设计。ENTITY________________ISPORT(ain,bin,:INSTD_LOGIC;c,s:OUTSTD_LOGIC);END;ARCHITECTUREfd1OFfulladdIS___________________haddPORT(a,b:INSTD_LOGIC;c,s:OUTSTD_LOGIC);END;...U1:___________PORT__________(a=>ain,b=>bin);...