What Makes the Ershov Computer Unique

The competitive landscape

The Ershov Computer sits at the crossing of several product categories: computer architecture education, digital circuit simulators, HDL trainers and educational games. The closest products deserve to be named and fairly credited for what each does well.

Separate parts of the concept already exist on the market. What is new about the Ershov Computer is joining these mechanics, in sequence, into one educational system.

Each of the first three products also has its own detailed comparison with the course: Ershov Computer vs NandGame, Ershov Computer vs Turing Complete and Ershov Computer vs Nand2Tetris.

One path from signal to FPGA

The main difference is a vertical learning trajectory. The learner walks a single chain:

signal → wire → logic gates → arithmetic → memory → processor → computer → machine code → assembly → Verilog → FPGA.

Every next level reuses the results of the previous one: the parts the learner built become building blocks of the next level. The computer stops being a ready-made black box — the learner assembles it from the simplest parts, then programs the assembled system and carries the result onto real hardware. The final part of the path, moving a project onto a Tang Nano 9K board, is covered in the guide "Tang Nano 9K: from ZIP to board".

The simulator is the setting; the course is the point

A circuit simulator alone is not the answer: similar tools also let you build circuits and watch them run. In the Ershov Computer the simulator serves as the setting for a learning route. One product combines:

• a step-by-step course of 47 levels with a curriculum and a measurable outcome for each;
• visual circuit building and automatic checking against truth tables;
• comprehension quizzes after levels;
• deliberately broken circuits for debugging practice;
• a hint system: "try yourself → hint → solution";
• adaptive help after repeated mistakes;
• the Transistor Run game layer;
• the move from visual schematics to Verilog and onto an FPGA.

Hence the honest positioning: an interactive learning environment for building a computer, not yet another circuit simulator.

Transistor Run: the game as a second form of the material

The game layer is built into the learning model. Platformer levels repeat the first stages of the main course: wire, signal, logic gates, multiplexer. The game mechanics translate abstract notions into physically tangible actions: a wire is a path, a signal is a moving object, a broken trace is an obstacle, a switch is a control action, a gate is a mechanism, a door is the consumer of the signal.

The game model shares its logic with the main simulator, so the game becomes a second form of the same learning material. More in "About the game".

The teaching principle

The key principle of the product: the learner discovers how a computer works by building one, step by step. Hence the cause-and-effect chain: build → run → see the result → make a mistake → investigate the mistake → fix it → grasp the principle → reuse it as a building block.

Equally important is the move from "a correct solution" to engineering thinking. A working circuit is not enough: the learner learns to predict its behavior, find faults, and explain why the circuit works or does not.

This is not "Nand2Tetris in Russian"

Nand2Tetris is the closest conceptual reference, and claiming to be "the first to teach building a computer from scratch" would be incorrect: the course proved the idea and is used worldwide. A detailed comparison of the two courses lives in a separate piece — "Ershov Computer vs Nand2Tetris".

The difference lies elsewhere. Nand2Tetris shows that a computer can be built from scratch. The Ershov Computer turns that path into an interactive environment where the learner acts inside a single visual world, gets automatic feedback, takes comprehension checks, learns debugging, receives adaptive help, plays, and in the end carries the result onto real hardware.

Positioning

The short version: the Ershov Computer is a learning environment where the learner walks from the first signal to their own processor, programming and FPGA.

The essence of the approach shows in the order of study. Most courses start programming on a ready-made computer and teach its design as finished theory. Here the order is reversed: the learner first assembles the computer from the simplest parts and therefore knows how every unit inside works, and programming becomes the next step of working with a schematic of their own making. Hence the compact description of the route: from a signal to your own computer.

To sum up. The competitive advantage of the project is the composition of simulator, game and course around one question: "What is inside a computer, and where does it come from?". For separate parts of this task there are already strong solutions: Nand2Tetris for the systematic course, Turing Complete for the game form, CircuitVerse for circuit modeling, HDLBits for HDL practice. The Ershov Computer joins these approaches into a single pedagogical trajectory, and it is this wholeness, not any single technology, that underlies its uniqueness.

Frequently asked questions

What you can do today: open the first level of the course to see the build → run → understand principle in action, or take the placement test to find your starting point. Materials for classroom adoption live in the "For Teachers" section.