Connected nodes: Schematic diagrams

Circuit diagrams and schematics have a richer variety of node types than other drawing of connected nodes. This example includes a representative range of digital and analogue components, both integrated and discrete.

The circuit comes from a system that the author designed and built in high school. (Desktop computers were only just beginning to be able to handle the computational requirements of speech synthesis at that time.) The original was drawn by hand. Drawing in XFig was not much easier, adding the flexibility of rearranging elements, but making text placement tedious.

Speech Synthesis System. Circuit diagram of a speech system. This comprised a speech synthesis IC, an interface to the 1MHz bus of a BBC Microcomputer, power regulation and audio analogue output. Creation method: XFig, ps output.

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