Where complexideas becomevisible.
The core engineering syllabus — computer science, electronics, electrical, mechanical, civil — rebuilt as lessons you read, animations you watch run one step at a time, and questions that explain themselves. Not just what happened. Why it had to.
88
Topics you can watch today
5
Engineering branches covered
23
Core subjects mapped end to end
560
Topics on the roadmap and counting
Most explanationsshow you the answer.This shows youthe decision.
A textbook prints the finished diagram — the completed Gantt chart, the deflected beam, the settled waveform. A lecture draws it once, quickly, and moves on. Neither lets you stop halfway through and ask why it went that way.
The reasoning sits beside the step
Every frame is annotated with why the system did what it did. A trace you cannot explain is just a moving picture.
Real traces, not cartoons
Each topic runs the actual algorithm or model over concrete inputs and renders what came out — so the edge cases show up rather than being smoothed away.
Read it, watch it, answer for it
Every topic is a written lesson, the animation of the same idea, and a set of questions at the end. Three passes at one thing, in the order that makes each one land.
Traditionallearningvs Nexous
Nothing here is a knock on good teaching — it is a limit of the format. A lecture has to run at one speed, and a textbook cannot animate.
| Lectures & textbooks | Nexous |
|---|---|
| Pace | |
| Fixed. The lecturer moves on whether or not the step landed. | Yours. Pause on any tick, step back, replay the frame that lost you. |
| Lectures & textbooksFixed. The lecturer moves on whether or not the step landed. | |
| NexousYours. Pause on any tick, step back, replay the frame that lost you. | |
| The 'why' | |
| Said out loud once, if at all, and rarely written next to the diagram. | Written beside every frame, so it is still there on the third pass. |
| Lectures & textbooksSaid out loud once, if at all, and rarely written next to the diagram. | |
| NexousWritten beside every frame, so it is still there on the third pass. | |
| Revision | |
| Rewatch a 40-minute video to find the 90 seconds you needed. | Jump straight to the topic and scrub to the exact step. |
| Lectures & textbooksRewatch a 40-minute video to find the 90 seconds you needed. | |
| NexousJump straight to the topic and scrub to the exact step. | |
| Diagrams | |
| Static and finished. You never see the state that produced them. | Built up in front of you, one decision at a time. |
| Lectures & textbooksStatic and finished. You never see the state that produced them. | |
| NexousBuilt up in front of you, one decision at a time. | |
Six steps, andyou have actuallyunderstood it.
The same shape every time, so from the second topic onward you are spending your attention on the material instead of the interface.
- 01
Pick a topic
Branches hold subjects, subjects hold units, and a unit holds single topics — one page, one idea. Start anywhere; each page says what it assumes.
- 02
Read the lesson
The written explanation comes first: the definition, the vocabulary an exam will use, the formulas, and what the idea is good and bad at. It ends with a short list of what to watch for, so you arrive at the animation with a question.
- 03
Play it through
Press play and it runs one step at a time. The narration tracks the animation frame for frame — both read from the same step index, so they cannot fall out of sync.
- 04
Stop and interrogate it
Scrub to any step. Go back one frame. Ask why it went that way, and the answer is already written next to it.
- 05
Answer for it
Each topic ends with questions about the reasoning rather than the vocabulary — and every option explains itself, whichever one you pick.
- 06
Move to the next one
Every topic links to the one that follows it in teaching order, so a subject reads as a course rather than a pile of pages.
This is a topic,running right now
Round Robin with a quantum of 2 ticks. Press play, or step through it a slice at a time — exactly as you would on the real page.
CPU timeline
Ready queue at t=0
Why this happened
t=0 · P1 is the only process that has arrived, so it takes the CPU. The quantum is 2 ticks — the scheduler will interrupt it whether or not it has finished.
Start withyour branch
Five degree programmes, each with its own core subjects mapped end to end. A few subjects are taught in more than one, and appear under each.
Every subject,and how faralong it is
Grouped by branch, then in teaching order. Nothing here is a promise — the counts are read off the catalogue itself, so a subject cannot advertise topics it does not have.
What you get onevery single topic
Not a feature list for a plan you have to buy — this is what is on the page you just opened.
The lesson is written out
Definition, key terms, formulas, and what the idea is good and bad at — in the served HTML, readable before a single byte of the canvas has loaded.
Frame-accurate transport
Play, pause, step, restart, and 0.5× to 4× speed. Space, arrow keys and Home/End work once the player is on screen.
The diagrams you get examined on
Gantt charts, state machines, sequence strips, deflected beams, waveform pairs — built up in front of you, drawn the way you are expected to draw them.
A quiz that explains itself
A few questions about why a step went that way, not what it was called. Every option comes with the reason it is right or wrong — including the one you picked.
What watching itactually buys you
Not because animation is nicer to look at — these subjects are about state changing over time, and that is what prose carries worst.
State stops being abstract
Watch entries enter and leave a ready queue once, and 'moved to the back of the queue' becomes a picture rather than a sentence you memorised.
Cause and effect stay adjacent
A lecture gives the reason thirty seconds before it draws the step. Side by side, there is no gap to bridge from memory.
Failure modes stick
Starvation is forgettable as a definition, and hard to forget once you have watched a long job overtaken again and again — or one support removed and a whole frame turn into a mechanism.
Recall gets an index
An exam is reconstruction under time pressure, and a remembered timeline gives you something to reconstruct from.
Questions worthansweringup front.
Do I need an account?
No. There is no sign-up, no email wall and no paywall. Every topic is a plain URL you can open, bookmark or share.
Is this a replacement for my course?
No — it is the part your course is worst at. Lectures and textbooks are good at definitions, proofs and breadth. Nexous is for the handful of ideas in each unit that are really about state changing over time, where a static diagram makes you do the animating in your head. Each topic does still carry its own written lesson — definition, key terms, formulas, trade-offs — so you are not asked to interpret an animation of something nobody has explained to you yet.
Which syllabus does it follow?
The standard undergraduate core of five branches — computer science, electronics, electrical, mechanical and civil. Units are laid out in the order a course would teach them, and each subject page shows the full syllabus including what is not built yet. A few subjects, like digital logic and fluid mechanics, are taught in more than one branch and appear under each of them.
Why are some topics greyed out?
Because they are mapped but not built. A topic becomes a link only once its animation actually exists, which is deliberate: it means anything you can click is finished, and the roadmap can never quietly overstate what is here.
Are the traces real, or illustrations?
Real. Each topic runs the actual algorithm over concrete inputs and renders what came out, which is why the awkward cases — starvation, Belady's anomaly, the convoy effect — show up instead of being tidied away.
Will it help for exams?
That is what the traces are shaped around. The diagrams are the ones you get asked to produce by hand, the lessons use the vocabulary the question paper will use, and each topic closes with questions about why a step went the way it did — which is the part a paper actually tests and the part skimming does not survive.
Does it work on a phone?
Yes. The layouts stack on small screens and the transport controls are touch targets rather than keyboard-only. A wide screen is nicer for the side-by-side trace and narration, but nothing is gated behind it.
How do I ask for a topic?
Request it here. Topics are otherwise built in syllabus order within a unit, so asking is how one moves up the queue — the subject page shows you where it currently sits.
Still unsure whether the format suits you? Play the demo above — it takes about twenty seconds.
Pick one topic.Give it four minutes.
There are 88 topics waiting, and the fastest way to find out whether this works for you is to watch one all the way through.
Visualize. Understand. Master.