Derwent Classification System: Computing and Control
Covers control systems, data recording equipment, computing devices and peripheral apparatus, including construction details.
| T01 | Digital Computers (G06C-F) Electronic data processors, interfaces and programme control. Mechanical digital computers. |
| T02 | Analogue and Hybrid Computers (G06G, J) Function evaluators, equation solvers, simulators. |
| T03 | Data Recording (G11B) Analogue and digital recording on tape, disc etc, using for example, magnetic, optical, magneto-optical, capacitive methods. |
| T04 | Computer Peripheral Equipment (G06K) Card and tape punches and readers. Magnetic, optical and smart cards. Serial and line printers. VDUs, character and graphics generators. Pattern recognition, magnetic ink recognition, bar coders. COM equipment. |
| T05 | Counting, Checking, Vending, ATM and POS Systems (G06M, G07B-G) Counting systems. Ticket issuing, registering and franking apparatus. Attendance registering apparatus. Coin and paper currency handling. Point-of-sale equipment. Electronic funds transfer. |
| T06 | Process and Machine Control (G05B, D) General control systems. Control of non-electrical variables eg. temporal flow. Control system applications eg. machine tools, lifts. |
| T07 | Traffic Control Systems (G08G) Traffic light systems, flow control. Electronic indicators. |