# Questions tagged [circuitry]

A question about electronic circuits and logic gates.

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657 views

### Homeostasis logic/math problem

I'm trying to derive a generic formula for a programming algorithm. I might be overthinking this or underthinking it... we'll see. Each of the triangles below represents a container. Each container ...
629 views

### Troubles with a Rogue Circuit

Edit : Made the final step to the solution easier to solve, also added hint. I’m not quite sure what’s happening over here, but I believe you guys might be able to help. I started noticing ...
174 views

### Proof by induction without words

This seems more like a proof about induction than a proof by induction.   But what is this proof really about? That is, what circuit with an inductance of 4 henries between A and B does that ...
433 views

### A big logical mess

I found a drawing under a stack of books in my house. It looked like a logical circuit diagram, so I decided to make it. I assumed that I was allowed to put anything in the boxes with the question ...
725 views

### Prime Circuit Optimisation

It's logic gates time! You are only allowed to use NOT, OR, AND, XOR gates, accepting 1,2,2,2 inputs respectively. PART ONE You must build a circuit with $n$ inputs, and 1 output. The output must be ...
2k views

### 3 gates and a drop of acid

I was playing with some electronics recently, and I had bought three logic gates to make a small flat device that took two inputs, I1 and I2, and returned them in the opposite order (I2 then I1). ...
824 views

### Day and night of the two timers

Make a non - 24 - hour day /  night cycle       &...
2k views

### How many boxes are conductors?

The Question (Some knowledge of potential difference, resistor combinations, etc. required) You have 1000 boxes. Some (or none) of them are conductors (of negligible resistance). The rest are ...
3k views

### Invert three inputs with two NOT gates

You've just been hired by Widget & Co. to prototype a new electrical circuit for their line of impenetrable puzzle locks. As part of this circuit, your boss asks you to invert three boolean inputs....
4k views

### A Robot's Last Words

There, spread out all over the floor, were the mechanical pieces of a robot. Something had torn it apart, and the debris spanned a radius of a few meters. There was no sign of what might have caused ...