| 700 / | HD | DATA PROCESSING: GENERIC CONTROL SYSTEMS OR SPECIFIC APPLICATIONS |
| 1 | DD | GENERIC CONTROL SYSTEM, APPARATUS OR PROCESS {15} |
| 2 | | .~ Plural processors {4} |
| 3 | DD | .~.~> Master-slave |
| 4 | DD | .~.~> Parallel {1} |
| 6 | DD | .~.~> Hybrid types (analog, digital) |
| 7 | DD | .~.~> Including sequence or logic processor |