Elenco Understanding Logic Gates and Circuits Manuel d'utilisateur télécharger pdf (Page 6)

Introduction

Logic Problem Statements

 Logic problems have outcomes (or outputs) that depend on events

(or inputs).

 For example

• The cuckoo clock makes noise if the batteries are not dead AND it’s the top of

the hour.

• In this example, the output is “the cuckoo clock making noise” and the inputs

are “the batteries are not dead” and “it’s the top of the hour”.

• Note that in this example, the output is true (cuckoo clock makes noise) if and

only if both inputs are true (batteries are not dead AND it’s the top of the hour).

• You will see that this decision box can be represented by digital logic using an

AND gate, with the inputs and output being represented by digital signals.

You can think of digital logic gates as decision boxes that solve logic problems.

Decision

Box

Batteries not dead?

Top of the hour?

Cuckoo clock makes noise?

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Elenco Understanding Logic Gates and Circuits Manuel d'utilisateur Page 6