Block diagrams can be written ... Producing a schematic drawing on a computer is far neater than drawing it by hand, with computer programs available to quickly create accurate and neat schematics ...

When drawing circuit diagrams, rather than drawing detailed components, we use simple symbols to represent the different components.

draw.io desktop is a downloadable security-first diagramming application that runs on Windows, MacOS and Linux. Creating diagrams in the desktop app doesn’t need an internet connection.