Introduction of Python

Input/Output Devices for Discrete Data

Digital Input/Output

  • Digital IO is binary valued—it’s either on or off, 1 or 0
  • Internally, all microprocessors are digital, why?

Binary data:

  • Contact input interface – input data to computer
  • Contact output interface – output data from computer

Discrete data other than binary:

  • Contact input interface – input data to computer
  • Contact output interface – output data from computer

Pulse data:

  • Pulse counters – input data to computer
  • Pulse generators - output data from computer

Bits and Bytes