Description

 build a virtual Digital to Analogue Converter (DAC). Criteria is as follows:

  • Construct a DAC to give 0.5 volt increments using a series of four switches and two op amps
  • Use 5V supply for the digital circuit and +/- 15V for op amp
  • 0000= 0V
  • 0001 = 0.5V
  • 0010 = 1V
  • 0011 = 1.5V
  • 0100 = 2V
  • 0101 = 2.5V
  • 0110 = 3V
  • 0111 = 3.5V
  • 1000 = 4V
  • 1001 = 4.5V
  • 1010 = 5V
  • 1011 = 5.5V
  • 1100 = 6V
  • 1101 = 6.5V
  • 1110 = 7V
  • 1111 = 7.5V