Just a day after the long-suffering smartphone and handheld maker Palm picked up a $100 million investment from Elevation Partners, mobile computing startup Motion Computing is announcing a smaller, $6 million investment of its own.

Motion Computing makes slate tablet PCs that are used within industries, especially health care and mobile service. The company has three main lines of tablets, ranging from semi-rugged to fully ruggedized.

The Austin, Tex. company last raised $25 million in 2004, and has taken almost $50 million to date. The investors in this round were New Enterprise Associates, Institutional Venture Partners, G-51 Capital and others.