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Selected Statement of Operations Data (Tables)

12 Months Ended

Dec. 31, 2020

Disclosure Text Block Supplement [Abstract]

Schedule of revenues classified by product lines

		Years Ended December 31,
		2 0 2 0				2 0 1 9				2 0 1 8
		U.S. dollars in thousands
Product line “A”		$	11,986			$	13,591			$	14,923
Product line “B”			2,642				2,956				3,212
Product line “C”			8,746				6,117				-
		$	23,374			$	22,664			$	18,135

Schedule of geographical revenues classified by geographical location of the customers

		Years Ended December 31,
		2 0 2 0				2 0 1 9				2 0 1 8
		U.S. dollars in thousands
The Americas		$	10,355			$	12,030			$	13,130
Europe			11,734				8,839				3,328
Israel			893				1,272				884
Other			392				523				793
		$	23,374			$	22,664			$	18,135

Schedule of financial income (expense) - net

		Years Ended December 31,
		2 0 2 0				2 0 1 9				2 0 1 8
		U.S. dollars in thousands
Income:
Interest on bank deposits and short-term investments		$	172			$	219			$	208
Non-dollar currency gains, net			147				89				-
Income from marketable securities			83				165				77
Realized gain from sale of available-for-sale securities			-				24				28
Interest on available-for-sale securities			-				-				27
			402				497				340
Expenses:
Non-dollar currency losses, net			-				-				(107	)
Bank commissions and charges			(23	)			(14	)			(11	)
			(23	)			(14	)			(118	)
		$	379			$	483			$	222

Schedule of earnings per ordinary share (''EPS'')

		Years Ended December 31,
		2 0 2 0				2 0 1 9				2 0 1 8
		In thousands
Weighted average number of shares issued and outstanding - used in computation of basic EPS			19,907				19,746				19,344
Add - incremental shares from assumed exercise of options			231				216				217
Weighted average number of shares used in computation of diluted EPS			20,138				19,962				19,561

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