# Tag: Transistors

## Member Post

As a kid in the Boy Scouts we’d go camping occasionally at Fort Gibson. This, you see, was the name the eponymous Mr. Gibson gave to his extensive tract of land along the south fork of the Flambeau River. Being a firm proponent of the principle that Men are just Boys with bigger Toys he […]

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## How to Build a Computer 19: Logic Gates

Welcome back to How to Build a Computer. You recall where we’re at, right? Hah! Trick question. As if I’d stick to a rational sequence. Today we’re going over some of the details in how you go from electrical circuits doing whatever it is that electrical circuits do and turn that into logic. We’re talking Logical Gates

Logic gates! Each one more logical than the last.

## Member Post

Listen, I’m going to be straight with you. This one is mostly for my fun. I mean, they’re all up largely because I like to hear the sound of my own voice. But this one, this one is a bit superfluous. This is the quantum mechanical explanation for how semiconductors work. I’ve already described the […]

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## How to Build a Computer 7: Patterning

We left off last time discussing circuits and logic and how to make your transistors do something useful. Fun stuff, but I wanted to swing back through a bit more of the manufacturing details. Let’s say I’m trying to make this circuit:

Don’t be fooled by the clever marketing; this is an OR gate with a NOT gate stuck on its nose. Wake up sheeple!

## How to Build a Computer 6: Simple Transistor Circuits

The problem with simple transistor circuits is that any circuit with a transistor in it isn’t all that simple. And frankly, I don’t know how much you know about circuits; I’m guessing it ranges from “nothing at all” to “teach your grandmother to suck eggs why don’t you.” At the risk of boring the latter crowd we’re going to give this a slow and superficial treatment. Let’s start with a circuit that’s just about as simple as I can make it. So simple it doesn’t even have a transistor in it!

I’d make this circuit more interesting but I don’t know the symbol for ‘electric chair’.

## How to Build a Computer 4: Diodes and Transistors

We all love blasting things with ions, and most of us could spend all day shooting at wafers, but eventually someone is going to ask you to build something useful. What am I doing with all this mess of silicon anyhow? Here’s where we see the use of all that stuff. What do you suppose happens when you put a p-doped chunk of silicon next to an n-doped chunk of silicon?

One last cookie photo, then I’m going on a diet. Swearsies.