# Circuit diagram to Boolean to Ladder help

#### stinky111

Joined Apr 7, 2011
39
Hi all, Am trying to Get a boolean expression from my circuit diagram and then write a ladder diagram from my boolean expression.. Can you guys please cast your eyes over my attachment to check my progress.. Thanks in advance

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#### justtrying

Joined Mar 9, 2011
439
you are missing some bracets.

When expressions are simple, you can always check final result by writing a truth table for original expression and comparing it with the truth table for the simplified one. (wors for long expressions too but very tedious and error-prone)

#### stinky111

Joined Apr 7, 2011
39
you are missing some bracets.

When expressions are simple, you can always check final result by writing a truth table for original expression and comparing it with the truth table for the simplified one. (wors for long expressions too but very tedious and error-prone)
Ok thanks....

Brackets as follows??

A.B . (C+D)

#### justtrying

Joined Mar 9, 2011
439
yes, and you should expand to get the final answer (the SOP -sum of products - form)