Physics · Digital Electronics
How can a 2-input OR gate be implemented using only 2-input NAND gates?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Use four NAND gates - two as NOT gates and two for the subsequent NAND operations.
- 2Use three NAND gates - two configured as NOT gates to invert the inputs, and one to combine their outputs.✓
- 3Use one NAND gate with inverted output logic levels.
- 4Use two NAND gates - one as a NOT gate and one for the combined OR operation.
Correct answer
Use three NAND gates - two configured as NOT gates to invert the inputs, and one to combine their outputs.
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