Note F - Significant Customers (Tables)

9 Months Ended

Sep. 30, 2018

Customer Concentration Risk [Member]

Notes Tables

Schedules of Concentration of Risk, by Risk Factor [Table Text Block]

	Three months ended September 30,				Nine months ended September 30,
	Unaudited
Major customers/ distributors	2018		2017		2018		2017
VTech Holdings Ltd.		21%		24%		23%		28%
Nexty Electronics ¹ ²		12%		15%		12%		12%
Ascend Technology Inc. ¹ ³		29%		24%		27%		22%