DrawboardAndPiano. fed 3106 assessment2 外教作业. 内置画板和钢琴，画板具有撤销，反撤销，更改画笔颜色，背景颜色，画笔粗细，橡皮擦粗细，保存笔迹到本地等功能，支持多点触控。 选择木琴，钢琴，长笛等播放。支持多点触控，声音生成等。

Problem

The full read on this project is a sign-in away — what it solves, who it serves, and where it sits in the market.

Audience

The full read on this project is a sign-in away — what it solves, who it serves, and where it sits in the market.

Market

The full read on this project is a sign-in away — what it solves, who it serves, and where it sits in the market.

Pricing

The full read on this project is a sign-in away — what it solves, who it serves, and where it sits in the market.