Hall of Brains

 

This page is the place for creative solutions to puzzles, for brains that do something interesting or just look cool. If you have such a brain, send me the brain file and I will include it.

 

Video Games

Four mini games built using neurons. Very impressive. Submitted by Evan Clark.

 

Stopwatch

A stopwatch that shows hours/minutes/seconds and has start, stop and reset functions. Submitted by Eric Astor.

 

Single Neuron Xor II (for exp 9 in lab: Xor)

Another single neuron Xor. If it passes the test it must be an Xor? Right? Errr.... I guess. Submitted by Jon Chambers.

 

Scoller (requires version 2.00)

Scroller is a scrolling display like the LED displays, with a 20x6 resolution. You can modify every pixel of the display and set it scrolling.

Both this and the next brain  recommend that you set Brain Cycles Per Update in the brain properties timing tab to a high value (50 for MyCalc and 100 for Scroller). Right click on the brain board and select properties from the popup menu. Submitted by Mike Day.

 

MyCalc (requires version 2.00)

MyCalc is an eleven digit calculator that only supports addition. It uses linear memory and a technique to add single base ten digits and handle the carry in only four neurons per digit (see the bottom row for how this works). Submitted by Mike Day.



Running Lights (for Exp 4 in neuron lab: Neuron threshold)

Simple but neat brain that uses snoopers. Submitted by Tim Plett.

 

Addition

An accumulator that can store any number between 0 and 9999. It uses linear neurons for storage and an oscillator to convert the number to a series of pulses. Press the number keys to add a number to the displayed number, and C to clear. The system to the left of the display is the input area that also converts the numbers to pulses, and the area underneath is the counter. Submitted by Jerome Dolman

 

Seasons Greetings

A Christmas banner. Submitted by Luke Mole.

 

You Drive (for Exp 5 in lady bug: New directions)

Key control for the Lady Bug, but it won't let you do anything to kill it. Press W to go forward, A to turn left and D to turn right. When you press S it will run by itself and will randomly decide at the time you press the key which direction to use. Submitted by Luke Mole.

 

Shift Register

An 8-bit digital shift register that shifts the contents to the right with each clock pulse. Press J to set the bit on the left. Press P to set all bits and C to clear all bits. Submitted by Antonio Conti.

 

Clock

A 24 hour digital clock that shows the time as hours:minutes. Set the time by holding down the Q key and pressing H, M, or S. The zip file includes a description. Submitted by Ben Nelson.

 

Counter4 (for Exp 2 in lab: Two lights)

A counter which uses a sequence of neurons to count the pulses. The author suspects it could be done with fewer neurons. Can you see how? Submitted by Randall Tuesday.

 

Granny Bug (for Exp 5 in lady bug: New directions)

Maybe it has had one too many cups of coffee. It's doing the jitterbug but it passes the test. Submitted by Jey Kottalam.

 

Single Neuron Xor (for exp 9 in lab: Xor)

A single neuron Xor that proves all the textbooks wrong? "Well, it looks good and passes the test, but something can't be quite right...". Submitted by Kyle Headley

 

Simple Display

Displays a number key that has been pressed. Press C to clear number. Submitted by Jake Hulse.

 

Shift Display

Inspired by the Simple Display brain, this shows a three digit number. Press C to clear. Uses linear neurons for storage. An RTF file is included to explain how it works.

 

Calc

A calculator built out of neurons! Very impressive. The 'P' key is '+' and '='. So press Number P Number P to add two numbers. Press the 'C' key once to clear the entry and twice to clear everything. This brain is at the limit of the number of components that can be used. Needs Version 1.01 of the program to have keyboard input. Submitted by Kyle Headley.

 

Stepper (for Exp 5 in lady bug: New directions)

Bug takes a single step when you press the 'S' key. Runs when you hold down the 'R' key. Needs Version 1.01 of the program to have keyboard input. Modified version of brain submitted by Kyle Headley.

 

LED Display

Uses neurons as the seven-segment display of a counter. The speed can be increased by changing the decay of the synapses. Submitted by Kyle Headley.

 

Random Bug (for Exp 5 in lady bug: New directions)

The lady bug chooses which direction to go using an oscillator and so takes a random walk around the branch. Submitted by Terry Newton.

 

Sequencer (for Exp 5 in neuron lab: Light scale)

A single bulb is lit at each input level. That is, light 1 is on when the input is 0 - 20, light 2 is on when the input is 20 - 40 etc.

 

Counter (for Exp 3 in neuron lab: Disco)

The four lights are a binary display of the number of input pulses. The pair of neurons on the left of each row use the small delay caused by a neuron to detect a change from 100 to 0. The current state is stored in the neuron on the right. And the two in the middle switch it on and off.

 

Banner (for Exp 4 in neuron lab: Neuron threshold)

Blatant self promotion.

 

 

 

Copyright 2000, Tom Morton
Last updated January 21, 2002