Introduction:
The storage element used by both MAC and IBM PC is CMOS. CMOS stands for Complementary Metal-Oxide-Semiconductor, which is a type of semiconductor technology used to store data in electronic devices.

Explanation:
- CMOS: CMOS is a type of integrated circuit technology that uses both NMOS (N-type Metal-Oxide-Semiconductor) and PMOS (P-type Metal-Oxide-Semiconductor) transistors to store information. It is commonly used for storing settings, data, and BIOS information in computers.
- MAC: MAC, which stands for Media Access Control, is a term used to refer to Apple Macintosh computers. These computers use CMOS technology for storing various settings and information. This includes BIOS settings, date and time, NVRAM (Non-Volatile Random Access Memory) data, and other system-specific information.
- IBM PC: IBM PC refers to personal computers manufactured by IBM (International Business Machines) and other compatible manufacturers. Similar to MAC, IBM PCs also use CMOS technology for storing various system settings and data. This includes BIOS settings, date and time, configuration parameters, and other system-specific information.

Advantages of CMOS:
- Low Power Consumption: CMOS technology is known for its low power consumption, making it ideal for use in devices that require long battery life.
- High Integration Density: CMOS technology allows for high integration density, meaning that a large number of transistors can be packed into a small area on a chip. This enables the creation of complex integrated circuits with a small form factor.
- Non-Volatile Memory: CMOS memory is non-volatile, which means that it retains its stored information even when power is removed. This is important for storing critical system settings and data that should not be lost during power cycles or system shutdowns.

Conclusion:
In conclusion, both MAC and IBM PC use CMOS technology as the storage element. CMOS provides advantages such as low power consumption, high integration density, and non-volatility, making it suitable for storing various system settings and data in electronic devices.