Difference between PLCs and Personal computer


  • Operates in industrial enviroment

  • PLC is programmed in relay ladder logic

  • Has no keyboard, CD drive, monitor, or disk drive

  • Has communication ports and terminals for input and output devices


  • Capable of executing several programs simultaneously, in any order.

  • Some manufacturer have software and interface card available so that a PC can do the work of a PLC.

  • Speedy information processing

  • Easy customization

  • Straightforward data exchange with other systems