[net.works] Low-Cost Trackballs

Patrick@sri-unix (07/23/82)

In a recent issue of Electronic Engineering Times (Issue 238, July 19, 1982,
page 43), two sources of low-cost trackballs are given:

	Disc Instruments
	102 E. Baker St.
	Costa Mesa, CA  92626
	(714) 979-5300
	Cost: $65.00 (single quantities?)

	Litton Systems, Encoder Div.
	20745 Nordhoff St.
	Chatsworth, CA  91311
	(213) 341-6161
	Cost: $286.00 (hundreds)
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