8421 BCD led #2

An interactive LED, resistor, switch and battery circuit built in the DCACLab online simulator by albert spinosa.

Preview of 8421 BCD led #2

Open in the lab Embed The simulation runs as a demo that pauses after two minutes; open it in the lab to keep going.

What's inside

1× Battery
4× Resistor (181 Ω, 179 Ω)
4× LED
4× Switch

Tags

Battery Switch Resistor LED

About

By albert spinosa
Saved September 14, 2025 · updated January 15, 2026
968 views
Page: dcaclab.com/circuits/85388-8421-bcd-led-number-2

Embed this circuit

<iframe src="https://dcaclab.com/experiments/85388-8421-bcd-led-number-2/iframe" width="560" height="410" frameborder="0"></iframe>

Cite: spinosa, a. (2025). 8421 BCD led #2. DCACLab. https://dcaclab.com/circuits/85388-8421-bcd-led-number-2

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