COMPUTER HARDWARE COMPONENTS FUNCTIONS
EXTERNAL AND INTERNAL STORAGE DEVICES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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+3.3VDC
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+5VDC
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-5VDC
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+12VDC
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-12VDC
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Detailed explanation-1: -A PC’s power supply produces +3.3VDC, +5VDC, –5VDC, +12VDC, and –12VDC from a 110VAC input.
Detailed explanation-2: -Power supplies, often referred to as “switching power supplies", use switcher technology to convert the AC input to lower DC voltages. The typical voltages supplied are: 3.3 volts.
Detailed explanation-3: -Computer Power Supply Voltages There are three primary types of DC voltage. 12 Volts is required to feed the mainboard and any new-gen graphics cards. 5 Volts is necessary for the chassis and CPU fan or USB ports. 3.3 Volts is used to power the CPU.
Detailed explanation-4: -A computer ATX power supply usually provides five separate voltages: +12V, – 12V, +5V, –5V, and +3.3V. Watt (W)-The unit used to measure power.
Detailed explanation-5: -Your computer’s power supply both converts the alternating current (AC) from an American wall socket to the DC necessary for the internal power needs of the computer, and regulates the voltage. Internally, personal computers utilize +/-12, 5, 3.3, or 2.8 volts DC.