Final answer:
A digital-to-analog converter (DAC) is needed to convert digital signals to analog signals.
Step-by-step explanation:
To convert digital signals to analog signals, you would need a device called a digital-to-analog converter (DAC).
This hardware takes in a sequence of binary ones and zeros, which represent the digital signal, and converts it into a continuous analog signal. The DAC accomplishes this by varying the output voltage or current to correspond to the binary bits in the digital signal.
A common example of a DAC is the audio interface in a computer or smartphone, which converts digital audio signals into analog signals that can be heard through speakers or headphones.