Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
권호 표지

Analysis of the Borrow Look-ahead Subtracter Design

Borrow Look-ahead Subtracter 설계에 대한 분석

  • Yu, Jang-Pyo (School of Electrical and Electronics Engineering, Chung-Ang Univ.) ;
  • Chung, Tae-Sang (School of Electrical and Electronics Engineering, Chung-Ang Univ.)
  • 유장표 (중앙대 전자전기공학부) ;
  • 정태상 (중앙대 전자전기공학부)
  • Published : 2000.11.25
Download PDF
⟨ Previous Next ⟩

Abstract

This paper implements and analyzes logically the Borrow Look-ahead Subtracter using Borrow Generator and Borrow Propagator. In subtracting calculation, we improve the calculating efficiency with using 4-bit subtracter which has Borrow Look-ahead Subtracters connection, and show that this is compatible with adder using the concept of Carry Generator and Carry Propagator. This subtracter may be useful in frequent subtracting calculation. We think this approach makes it possible to implement simple ALU(Arithmetic Logic Unit) with combining the concept of Borrow Look-ahead Subtracter and Carry Look-ahead Adder.

Keywords