COMPUTER Q&A ✔️ Q1. What is the personal computer operating system that organizes and uses a graphic desktop environment? 👉 Windows ✔️ Q2. What are Light pen and joystick ? 👉 I nput Devices ✔️ Q3. What is a half byte also called as? 👉 Nibble ✔️ Q4. SMPS stands for__? 👉 Switched mode Power Supply