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