Basic Input Output System (BIOS) are used in computer by:

A) Operating system 
B) MS Word
C) MS Excel
D) MS Office

🧠 Explanation:

BIOS, used by operating systems, initializes computer hardware during startup. For tech students, this highlights computer architecture, making it a key topic for studying hardware, operating systems, and digital literacy. BIOS ensures system functionality. Understanding this ensures knowledge of computer operations. It’s essential for analyzing computer systems, IT, and engineering. Studying BIOS offers insights into how systems boot, crucial for computer science, IT, and engineering, ensuring proficiency in hardware initialization.