Ladder logic is a programming language that uses graphical symbols to represent the logic of a program. It is used extensively in industrial applications such as PLCs and SCADA systems. Ladder logic is easy to learn and use, making it a popular choice for many programmers.

Ladder logic programs are made up of rungs, which are horizontal lines that connect the vertical lines representing input devices, output devices, and logical operators. Each rung has one or more instructions, which tell the PLC what to do when certain conditions are met. For example, a rung might turn on an output device when an input device is activated.

Ladder logic is powerful enough to create complex programs, but its simple structure makes it easy to understand and debug programs. This makes it an ideal choice for many industrial applications where reliability and safety are critical concerns.

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