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5.1 Explain the difference between a sinking output and a sourcing output - NSC Electrical Technology Digital - Question 5 - 2023 - Paper 1
Question 5
5.1 Explain the difference between a sinking output and a sourcing output. (Drawings are NOT allowed.) 5.1.2 Name ONE method, other than the LED display, of display... show full transcript
Worked Solution & Example Answer:5.1 Explain the difference between a sinking output and a sourcing output - NSC Electrical Technology Digital - Question 5 - 2023 - Paper 1
Step 1
Explain the difference between a sinking output and a sourcing output.
Answer
A sinking output is when the output device connects to the load's negative side. This means that the device 'draws' current from a higher voltage source, effectively allowing current to flow into the device. In contrast, a sourcing output connects to the load's positive side, supplying current to the load. This setup forces current to flow out of the device and towards the load. Thus:
- Sinking Output: Connects to the load's negative side; current flows into the device.
- Sourcing Output: Connects to the load's positive side; current flows out of the device.
Step 2
Name ONE method, other than the LED display, of displaying information in digital systems.
Answer
One method of displaying information in digital systems, besides an LED display, is using a Liquid Crystal Display (LCD). LCDs offer a versatile way to present alphanumeric data and graphical information, making them widely used in various electronic devices.