डिजिटल सिग्नलला अ‍ॅनालॉग सिग्नलमध्ये रुपांतरित करणारे उपकरण कोणते? A. वाय-फाय B. मोडेम C. पोर्ट D. USB

A modem (modulator–demodulator) converts a computer's digital signals into analog signals that can travel over telephone or cable lines (modulation), and converts incoming analog signals back to digital (demodulation).