The output of a basic 4-bit input digital-to-analog converter would be capable of outputting:

• 16 different values of voltage or current that are not proportional to the input binary number
• 16 different values of voltage or current that are proportional to the input binary number
• 32 different values of voltage or current that are not proportional to the input binary number
• 32 different values of voltage or current that are proportional to the input binary number