📥➡️⬛️➡️📤

#black box system #process diagram #unknown process #function box #system model #IPO model

🧩⚙️🗺️

#data components #system model #data flow #information structure #data architecture #data organization map

📦→[⚙️]→📦

#input output diagram #process diagram #system model #functional block diagram #data flow diagram