Which type of power supply was originally used in legacy computer systems?

Which type of power supply was originally used in legacy computer systems?

• A. Advanced Technology (AT)
• B. AT Extended (ATX)
• C. EPS12V
• D. Direct Current (DC)

Answer: (D)

The original power supply used in legacy computer systems is the Advanced Technology (AT) power supply. This power supply standard was introduced by IBM in the mid-1980s and became the foundation for many PC systems. The AT power supply provided a means to deliver electrical power to the computer components, using a 20-pin connector to connect to the motherboard. Understanding the significance of the Advanced Technology power supply helps in grasping how power supply design has evolved over the years. AT supplies offered basic functionality, providing power to essential components while setting the stage for future developments in more sophisticated power supply standards that followed. The ATX standard, introduced later, improved upon the AT design with advanced features such as more connectors, increased power codes, and the capability for better power management. EPS12V was developed primarily for server systems, emphasizing reliability and higher power requirements. Direct Current (DC) signifies the type of electrical current that is delivered, but it does not specifically refer to the power supply standard used in legacy systems. Thus, the Advanced Technology power supply is the key reference here as it laid the groundwork for modern computer power supplies.

The original power supply used in legacy computer systems is the Advanced Technology (AT) power supply. This power supply standard was introduced by IBM in the mid-1980s and became the foundation for many PC systems. The AT power supply provided a means to deliver electrical power to the computer components, using a 20-pin connector to connect to the motherboard.

Understanding the significance of the Advanced Technology power supply helps in grasping how power supply design has evolved over the years. AT supplies offered basic functionality, providing power to essential components while setting the stage for future developments in more sophisticated power supply standards that followed.

The ATX standard, introduced later, improved upon the AT design with advanced features such as more connectors, increased power codes, and the capability for better power management. EPS12V was developed primarily for server systems, emphasizing reliability and higher power requirements. Direct Current (DC) signifies the type of electrical current that is delivered, but it does not specifically refer to the power supply standard used in legacy systems. Thus, the Advanced Technology power supply is the key reference here as it laid the groundwork for modern computer power supplies.