Which of the following is a digital device?

Which of the following is a digital device?

• A. Acoustic instrument
• B. Sun dial
• C. Vinyl record
• D. Computer

Answer: (D)

Digital devices handle information in discrete units, typically bits that are 0 or 1, and process those bits with digital circuits. A computer does exactly this on many levels: it uses a central processor to execute binary instructions, memory to store data as bits, and software to convert user input into digital data, perform operations, and produce output. Because everything a computer works with is ultimately represented as binary data, it is a clear example of a digital device. An acoustic instrument, by contrast, produces sound through mechanical or acoustic processes without converting the sound into digital data. A sundial tells time using the position of the sun’s shadow, lacking any electronic or digital processing. A vinyl record stores and plays back audio as continuous, analogue grooves rather than discrete binary data, even though playback can involve digital conversion later, the medium itself is not digital.

Digital devices handle information in discrete units, typically bits that are 0 or 1, and process those bits with digital circuits. A computer does exactly this on many levels: it uses a central processor to execute binary instructions, memory to store data as bits, and software to convert user input into digital data, perform operations, and produce output. Because everything a computer works with is ultimately represented as binary data, it is a clear example of a digital device.

An acoustic instrument, by contrast, produces sound through mechanical or acoustic processes without converting the sound into digital data. A sundial tells time using the position of the sun’s shadow, lacking any electronic or digital processing. A vinyl record stores and plays back audio as continuous, analogue grooves rather than discrete binary data, even though playback can involve digital conversion later, the medium itself is not digital.