TOPS-20
E232117
TOPS-20 is a mainframe time-sharing operating system from the 1970s and 1980s, known for its advanced interactive features and use on DEC’s PDP-10 systems.
All labels observed (2)
| Label | Occurrences |
|---|---|
| TOPS-20 canonical | 8 |
| DECSYSTEM-20 operating system | 1 |
Statements (53)
| Predicate | Object |
|---|---|
| instanceOf |
mainframe operating system
ⓘ
operating system ⓘ time-sharing operating system ⓘ |
| architecture | 36-bit ⓘ |
| basedOn |
TENEX operating system
ⓘ
surface form:
TENEX
|
| developer |
DEC
ⓘ
Digital Equipment Corporation ⓘ |
| feature |
EXEC command processor
ⓘ
HELP system ⓘ JSYS system calls ⓘ background jobs ⓘ command completion ⓘ command-line editing ⓘ logical names ⓘ monitor commands ⓘ online documentation ⓘ privileged capabilities system ⓘ |
| kernelType | monolithic kernel ⓘ |
| notableFor |
advanced interactive features
ⓘ
influence on later interactive operating systems ⓘ user-friendly command interface ⓘ |
| operatingSystemFamily | TOPS family ⓘ |
| platform | DEC mainframe ⓘ |
| primaryUserInterface | command-line interface ⓘ |
| programmingLanguageSupport |
ALGOL
ⓘ
BASIC ⓘ BLISS ⓘ COBOL ⓘ Fortran ⓘ
surface form:
FORTRAN
Lisp programming language ⓘ
surface form:
LISP
MACRO-20 assembly language ⓘ Pascal ⓘ |
| releasePeriod |
1970s
ⓘ
1980s ⓘ |
| runsOn |
DECsystem-20
ⓘ
PDP-10 ⓘ |
| status | discontinued ⓘ |
| supports |
access control lists
ⓘ
batch processing ⓘ demand paging ⓘ email ⓘ file versioning ⓘ hierarchical file system ⓘ interactive computing ⓘ job control ⓘ networking ⓘ remote login ⓘ symbolic links ⓘ time-sharing ⓘ virtual memory ⓘ |
| usedFor |
academic computing
ⓘ
commercial time-sharing services ⓘ research computing ⓘ |
Referenced by (9)
Full triples — surface form annotated when it differs from this entity's canonical label.