4 × 4 matrix keyboard interface circuit achieved by single port lines. Issue 10 (1st May 2016)

• Record Type: Journal Article
• Authors: Lin, Zhiqi; Shi, Xinrong
• Is Part Of: Electronics letters. Volume 52:Issue 10(2016)
• Page Start: 803
• Page End: 805
• Publication Date: 2016-05-01
• Subjects: capacitors -- integrated circuit design -- equivalent circuits; resistances -- capacitors -- scanning method -- single port lines -- 4 matrix keyboard interface circuit; Electronics -- Periodicals; 621.381
• DOI: 10.1049/el.2015.3586
• Languages: English
• ISSNs: 0013-5194

Abstract

Abstract : It is usual that eight pins is used to connect the single‐chip with 4 × 4 matrix keyboard by the method of scanning. A method without any other active element is raised. Only one pin, four capacitors and four resistances are used to connect the single‐chip with 4 × 4 matrix keyboard without any other chip and active element.