说明：  Ripple Adder: 16-bit 全加,半加及ripple adder的设计及VHDL程序 Carry Look ahead Adder:4, 16, 32 bits 前置进位加法器的设计方案及VHDL程序 Carry Select Adder:16 Bits 进位选择加法器的设计方案及VHDL程序
(Ripple Adder : 16-bit full adder, semi-Canada and the ripple adder design and VHDL procedures Carry Look ahead Adder : 4, 16, 32 bits front rounding Adder and the VHDL design procedures Carry Select Adder : 16 Bits Progressive Choice Adder design and VHDL- sequence)