Digital integrated circuits are the basis of all kinds of digital system functions, and the basis of digital integrated circuits is logic gates. Digital systems composed of digital logic circuits have the characteristics of fast working speed, high precision, strong functions and good reliability. Because of the above characteristics, they are widely used. This article explains that the AOC model dual-frequency color display uses digital logic integrated circuit 74LS86 (two-input four XOR gates) and peripheral components to form a horizontal and vertical synchronization pulse signal processing circuit.
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