# DigiSim.io

> DigiSim is a browser-based digital logic circuit simulator and interactive learning platform. Users build, simulate, and share circuits using 60+ components — from basic logic gates (AND, OR, NOT) through flip-flops, registers, ALUs, and RAM/ROM to complete 8-bit CPU architectures. The platform includes SimCast, an animated lesson system with step-by-step circuit assembly narrated in 5 languages (English, Chinese, Japanese, Spanish, Korean). DigiSim uses a one-time purchase model with four tiers: Free, Fundamental, Professional, and Max.

The platform runs at https://digisim.io. The simulator is an Angular single-page application; the marketing site and documentation are built with Astro. The backend is a Spring Boot API communicating via Protocol Buffers.

## Documentation

- [Full Documentation](https://digisim.io/llms-full.txt): Complete platform documentation including all components, SimCast lessons, pricing, and API reference
- [Component Reference](https://digisim.io/docs): Interactive documentation for all 60+ digital logic components

## Core Pages

- [Simulator](https://digisim.io/circuits/new): Launch the circuit simulator workspace
- [Templates](https://digisim.io/template): 70+ pre-built educational circuit templates across 7 categories
- [SimCast](https://digisim.io/simcast): Animated circuit-building lessons with narration in 5 languages
- [SimCast Sets](https://digisim.io/simcast-sets): 8 themed lesson bundles following cognitive-flow learning
- [Pricing](https://digisim.io/pricing/fundamental): Four tiers — Free, Fundamental, Professional, Max
- [Blog](https://digisim.io/blog): Technical articles on digital logic and circuit design
- [About](https://digisim.io/about): Team and mission

## Optional

- [FAQ](https://digisim.io/faq): Frequently asked questions
- [Changelog](https://digisim.io/changelog): Release notes and version history
- [Contact](https://digisim.io/contact): Support and inquiries