How many volts direct current (VDC) does a personal computer's (PC) power supply provide for the microprocessor and memory?

How many volts direct current (VDC) does a personal computer's (PC) power supply provide for the microprocessor and memory?

• A. +3.3.
• B. +5.0 and -5.0.
• C. +6.0.
• D. +12.0 and -12.0.

Answer: (A)

The correct answer is that a personal computer's power supply typically provides +3.3 volts direct current (VDC) for the microprocessor and memory. In modern PCs, the +3.3V power supply is crucial because it powers the processor, RAM, and other critical components. These components are designed to operate at lower voltage levels to optimize energy efficiency and reduce heat generation, allowing for more compact and energy-efficient designs. While other voltage levels in a PC power supply, like +5.0V, -5.0V, +12.0V, and -12.0V, are used for different components (such as drives and fans), it is the +3.3V that specifically serves the microprocessor and memory. This highlights the importance of understanding voltage supply in relation to specific components in a computer system for effective troubleshooting and repairs.

The correct answer is that a personal computer's power supply typically provides +3.3 volts direct current (VDC) for the microprocessor and memory. In modern PCs, the +3.3V power supply is crucial because it powers the processor, RAM, and other critical components. These components are designed to operate at lower voltage levels to optimize energy efficiency and reduce heat generation, allowing for more compact and energy-efficient designs.

While other voltage levels in a PC power supply, like +5.0V, -5.0V, +12.0V, and -12.0V, are used for different components (such as drives and fans), it is the +3.3V that specifically serves the microprocessor and memory. This highlights the importance of understanding voltage supply in relation to specific components in a computer system for effective troubleshooting and repairs.