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computer. At that time the only available colour graphics adapter (CGA) had a resolution of 320×200 pixels, not sufficient for a CAD application. So the HEMA graphics was turned into an external "graphic box" and connected with the IBM AT via the parallel port. A next major improvement was the
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ColorCAM was originally developed and marketed under the name LAYCAD and was running on computers from ELTEC in Mainz, Germany, and HEMA in Aalen, Germany, using the
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Support and sales of ColorCAM were discontinued in 1993. In total, more than 1000 licenses of ColorCAM were sold worldwide by
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introduction of an expansion board using the
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to boost the processing power. ColorCAM itself was written in the
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concepts was realized on an expansion board using the
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