NSC Electrical Technology Digital LCD/LED Displays and Drivers: 5.1 Explain the difference betwe

Question

5.1 Explain the difference between a sinking output and a sourcing output. (Drawings are NOT allowed.)

A sinking output connects the LED's cathode, allowing current to flow through the LED when the output is activated. The output effectively pulls current from the LED to complete the circuit. This type of output is commonly used in digital circuits to control devices like LED displays where the active signal connects to ground.

A sourcing output, on the other hand, connects the LED's anode, providing current to the LED when the output is activated. Here, the output pushes current to the LED, sourcing it from the power supply. This configuration is used in situations where the output needs to power devices directly.

5.1.2 Name ONE method, other than the LED display, of displaying information in digital systems.

Liquid Crystal Display (LCD)

5.1 Explain the difference between a sinking output and a sourcing output - NSC Electrical Technology Digital - Question 5 - 2023 - Paper 1

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

Explain the difference between a sinking output and a sourcing output.

Name ONE method, other than the LED display, of displaying information in digital systems.

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