Download - COMPONENTS AND SYSTEMS
Transcript
COMPONENTS ANDSYSTEMS
PROGRAMMING DEVICES
• miniprogrammers• personal computers
PERSONAL COMPUTERS
THE DISCRETEINPUT/OUTPUT SYSTEM
• Generally speaking, there are three categories of rack enclosures:
• master racks• local racks• remote racks
AC/DC INPUTS
DC INPUTS (SINK/SOURCE)
DC INPUTS (SINK/SOURCE)
TTL INPUTS
REGISTER/BCD INPUTS
DISCRETE OUTPUTS
AC OUTPUT
DC OUTPUTS (SINK/SOURCE)
REGISTER/BCD OUTPUTS
CONTACT OUTPUTS
DISCRETE BYPASS/CONTROL STATIONS