The three-parameter battery tester controlled by 8031 chip microcomputer was described. The tester was made of contactless electric relays and IC. Its reliability and noise immunity were high.

本文介绍了一种由8031单片机控制的三参数电池检测仪。该检测仪全部采用无触点继电器和集成电路实现，具有较高的可靠性和抗干扰能力。

youdao

Visa is paving the way to increase the security of mobile payments by quickening the migration to EMV contact and contactless chip technology in the US. The EMV technology will speed up adoption of mobile payments.

FORBES: EMV Chip Technology, Secure Electronic Payments