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    <p>For everything computer related, I use a cooking dinner example. I start by saying that hard drives are cabinets/storage closets. Memory is like your counter. Processor is the cooking apparatus (stove). You are like the system bus (moving things around, etc...). So when you boot a computer, you take your basic ingredients out of storage and put them on the counter (loading the OS). This is a loose example, but it works well.</p> <p>Now to move into OOP: an ingredient is an object, so is a tool (bowl, knife, spoon, etc...). Each one of these has properties (knife= handle_color: black, blade_type: serrated, etc...). And each one has methods/actions that you can perform with them (knife = cut(pepper)).</p> <p>Now you can take this as far as you want to. For instance, there are green, yellow and red peppers. Each one is a pepper, so you can say "inherit the pepper class" (layman: take everything you know about a pepper and apply it to this specific pepper, pepper has a color attribute, a red pepper is color=red). </p> <p>You can even separate class from instance (this particular pepper is an instance, whereas on the recipe card it's a class).</p> <p>So you could make some pseudocode:</p> <pre><code>class pepper { var color var spiciness var size } class redPepper extends pepper { construct(){ $this-&gt;color=red } } class cuttingKnife extends knife{ construct(){ $this-&gt;blade_type=serated } } class cookingPot extends pot{ construct(){ //We all know what a cooking pot is } } class stove extends apparatus{ construct(){ //We all know what a stove is } } $knife = new cuttingKnife(); $myPepper = new redPepper(); $pot = new cookingPot(); $stove = new stove(); $knife-&gt;cut($myPepper); $pot-&gt;putOn($stove); $stove-&gt;cookOn("high"); $pot-&gt;putIn("water"); $pot-&gt;putIn($myPepper); //This will boil a cut pepper </code></pre> <p>Of course, people won't necessarily understand the pseudocode, but they would understand how to boil something. They would understand the difference between a "pepper" and a "red pepper". I think you can pretty much use this analogy for any computer related thing with some minor tweeks.</p> <ul> <li>multithreading: add more burners to the stove and another cook in a single kitchen</li> <li>multicore arch.: add a second kitchen</li> <li>downloading/installing software: go to store, find food, bring home, deposit in storage</li> <li>partitioning a HDD: different cabinets/fridge could be Linux proc system (because it's special).</li> </ul> <p>Etc...</p>
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    1. POHow can you explain the difference between an interface and an abstract class to a non-programmer?
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