Protocol Control
| Block
| Protocol Control | |
| IT abbr. | PC |
| BLOCK | |
| abbr. mil. avia. | bus lock |
| block | |
| abbr. avia. | stretch |
| abbr. polygr. | blk |
| IT dat.proc. | block |
| mil. abbr. | bl |
| |||
| PC | |||
|
Protocol Control : 3 phrases in 3 subjects |
| Abbreviation | 1 |
| Computer networks | 1 |
| Computers | 1 |