This paper describes about a video processor for personal computer which displays characters, graphics and motion pictures in NTSC signal at the same time in any form at anywhere on the personal computer display. And this system has many functions that are trimming, real-time magnifcation and reduction, mosaic, superimpose, picture freezing, logical operation between motion pictures in NTSC signal and graphics. Moreover, this system has NTSC signal output and you can record multi-media picture on your VTR. This system will be applied for CAI(Computer Aided Instruction) or presentation by personal computer etc..
