clarifying the scope of library

Attempt to clarify the scope of this library and what else is needed to make a complete application.

1 files changed, 31 insertions, 5 deletions

diff --git a/README.md b/README.md
index edbeeec..0eb769e 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,8 @@
 # AVR8js
 
-JavaScript implementation of the AVR 8-bit architecture
+This is a JavaScript library that implementats the AVR 8-bit architecture.
+
+It's the heart- but not the whole body- of the Arduino simulator at [https://wokwi.com](https://wokwi.com).
 
 [![Build Status](https://travis-ci.org/wokwi/avr8js.png?branch=master)](https://travis-ci.org/wokwi/avr8js)
 [![NPM Version](https://img.shields.io/npm/v/avr8js)](https://www.npmjs.com/package/avr8js)
@@ -8,12 +10,25 @@ JavaScript implementation of the AVR 8-bit architecture
 ![Types: TypeScript](https://img.shields.io/npm/types/avr8js)
 [![Gitpod ready-to-code](https://img.shields.io/badge/Gitpod-ready--to--code-blue?logo=gitpod)](https://gitpod.io/#https://github.com/wokwi/avr8js)
 
-## Running the demo project
+## Example Applications Using `AVR8js`
 
-The demo project allows you to edit Arduino code, compile it, and run it in the simulator.
-It also simulates 2 LEDs connected to pins 12 and 13 (PB4 and PB5). 
+* [WokWi Arduino Simulator](https://wokwi.com) - simulated Arduino UNO with a choice of hardware that can be wired up dynamically in your browser!
+* [WokWi Playgrounds](https://github.com/wokwi/wokwi-playgrounds) - pre-configured Arduino circuits with notes and goals. A starting point for an online lesson system.
+* [avr8js-electron playground](https://github.com/arcostasi/avr8js-electron-playground) - a Downloadable Electron Arduino simulator app
+* [AVR8js-Falstad](https://markmegarry.github.io/AVR8js-Falstad/) - combining the Falstad circuit simulator with AVR8js!
+* [The Engineering Physics Department of Dawson College's Arduino Course](https://tawjaw.github.io/Arduino-Robot-Virtual-Lab/) - an introduction to Arduino with a focus on robotics
 
-To run the demo project, check out this repository, run `npm install` and then `npm start`.
+## How to Use This Library
+
+This library only implements the AVR CPU core. 
+You have to supply it pre-compiled machine code to run, and implement functional simulations of any external hardware. You will probably also want to add  audio/visual representations of external hardware being simulated.
+
+A rough conceptual diagram:
+
+```
+Pre-Compiled machine code --> AVR8js <--> Glue code <--> external hardware functional simulation <--> simulation state display for the user
+```
+You may be interested in exploring the [wokwi-elements](https://github.com/wokwi/wokwi-elements) collection of web-components for visual representations of many common hardware components. (Note: these are visual only elements- you will need to add the appropriate functional simulation and glue code.)
 
 ### Walkthrough Video Tutorial
 
@@ -23,6 +38,8 @@ A step-by-step video tutorial showing how to build a simple Arduino simulator us
 
 ### Unofficial examples
 
+These examples show working examples of using `avr8js` in an application. Many of them also demonstrate how to use the `wokwi-elements` and include working examples of functional simulations of the components, and how to hook them up to `avr8js`.
+
 * [Minimal Example](https://stackblitz.com/edit/avr8js-minimal?file=main.ts)
 * [6 LEDs](https://stackblitz.com/edit/avr8js-6leds?file=index.ts)
 * [LED PWM](https://stackblitz.com/edit/avr8js-pwm?file=index.ts)
@@ -34,6 +51,15 @@ A step-by-step video tutorial showing how to build a simple Arduino simulator us
 * [Assembly Code](https://stackblitz.com/edit/avr8js-asm?file=index.ts)
 * [EEPROM persistence](https://stackblitz.com/edit/avr8js-eeprom-localstorage?file=eeprom-localstorage-backend.ts)
 
+Note: they are all hosted outside of this repo.
+
+## Running the demo project
+
+The demo project allows you to edit Arduino code, compile it, and run it in the simulator.
+It also simulates 2 LEDs connected to pins 12 and 13 (PB4 and PB5). 
+
+To run the demo project, check out this repository, run `npm install` and then `npm start`.
+
 ## Which chips can be simulated?
 
 The library focuses on simulating the *ATmega328p*, which is the MCU used by the Arduino Uno.