PubMed · 3617543
A versatile programmable pattern generator.
Abstract
A versatile visual pattern generator is described that can be programmed by a microcomputer and is developed as a part of a portable visual evoked potential analysis system. The hardware is contained on one printed circuit board (3" X 10", 7.5 X 25.5 cm) residing in an interface connector of a microcomputer (Apple II). The generator produces signals for commercial 50 Hz video monitors; a calibration procedure based on a photocell measurement corrects for the non-linear voltage intensity characteristic of the phosphor of the video monitor.
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H Sportel, H W Smit, C A Grimbergen. 1987. A versatile programmable pattern generator.. https://doi.org/10.1016/0042-6989(87)90149-0
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