This site uses cookies. By continuing to browse the ConceptDraw site you are agreeing to our Use of Site Cookies.
HelpDesk

How to Create a Fault Tree Analysis Diagram (FTD) in ConceptDraw PRO

Fault Tree Diagram are logic diagram that shows the state of an entire system in a relationship of the conditions of its elements. Fault Tree Diagram are used to analyze the probability of functional system failures and safety accidents. ConceptDraw PRO allows you to create professional Fault Tree Diagrams using the basic FTD symbols. An FTD visualize a model of the processes within a system that can lead to the unlikely event. A fault tree diagrams are created using standard logic symbols . The basic elements in a fault tree diagram are gates and events.
HelpDesk

Event-driven Process Chain (EPC) Diagram Software

An EPC diagram is a type of flowchart used in business process analysis. It shows different business processes through various work flows. The workflows are shown as processes and events that are related to different executes and tasks that allow business workflow to be completed.
An EPC diagram shows different business processes through various workflows. The workflows are seen as functions and events that are connected by different teams or people, as well as tasks that allow business processes to be executed. The best thing about this type of enterprise modelling is that creating an EPC diagram is quick and simple as long as you have the proper tool. One of the main usages of the EPC diagrams is in the modelling, analyzing and re-engineering of business processes. With the use of the flowchart, businesses are able to see inefficiencies in the processes and modify to make them more productive. Event-driven process chain diagrams are also used to configure an enterprise resource pla
The vector stencils library "HR flowchart" contains 62 flowchart symbols.
Use it to draw your HR flowcharts, workflow diagrams and process charts with the ConceptDraw PRO diagramming and vector drawing software.
The flow chart symbols library "HR flowchart" is included in the HR Flowcharts solution from the Management area of ConceptDraw Solution Park.
Annotation
Annotation, annotation,
Card
Card, card,
Check / audit (diamond)
Check / audit (diamond), check, audit,
Check / audit (square)
Check / audit (square), check, audit,
Collate
Collate, collate,
Comment / note symbol (brace)
Comment / note symbol (brace), brace callout, comment, note,
Communication link
Communication link, communication link,
Compare (diamond)
Compare (diamond), compare,
Compare (square)
Compare (square), compare,
Completed form
Completed form, completed form, document,
Concurrency symbol (fork / join)
Concurrency symbol (fork / join), concurrency symbol,
Conditional selector
Conditional selector, conditional selector,
Control transfer
Control transfer, control transfer,
Data input / output
Data input / output, data input, data output,
Database
Database, database,
Decision
Decision, decision,
Decision indicator - No
Decision indicator - No, decision indicator, no,
Decision indicator - Yes
Decision indicator - Yes, decision indicator, yes,
Delay
Delay, delay,
Direct access storage
Direct access storage, direct access storage,
Disk storage
Disk storage, disk storage,
Display
Display, display,
Divided process (table view)
Divided process (table view), divided process,
Document
Document, document,
Entity (rounded)
Entity (rounded), entity,
Event
Event, event,
Extract
Extract, extract, part, device,
Flow line
Flow line, flow line, arrow, connector,
Internal storage
Internal storage, internal storage,
Junction symbol
Junction symbol, junction symbol,
Lined document
Lined document, lined document,
Lined / shaded process
Lined / shaded process, lined process, shaded process,
Loop limit
Loop limit, loop limit,
Manual file
Manual file, manual file,
Manual input
Manual input, manual input,
Manual operation
Manual operation, manual operation,
Merge
Merge, merge,
Multi document
Multi document, multi document,
Multi process
Multi process, multi process,
Off-page reference - arrow
Off-page reference - arrow, off-page reference,
Off-page reference - incoming
Off-page reference - incoming, off-page reference,
Off-page reference - outgoing
Off-page reference - outgoing, off-page reference,
On-page reference/ Inspection point
On-page reference/ Inspection point, on-page reference, inspection point,
Or
Or, or,
Page
Page, page,
Paper tape
Paper tape, paper tape,
Predefined process
Predefined process, subroutine, predefined process,
Prepare conditional
Prepare conditional, preparation, prepare conditional,
Process step
Process step, process step,
Reference point
Reference point, reference point,
Sequential access storage
Sequential access storage, sequential access storage,
Sort
Sort, sort,
Start (circle)
Start (circle), start,
Start (ellipse)
Start (ellipse), start,
Stickman pictogram
Stickman pictogram, stickman pictogram,
Stored data
Stored data, stored data,
Summary
Summary, summary,
Tagged document
Tagged document, tagged document, document,
Tagged process
Tagged process, tagged process,
Terminal point
Terminal point, terminal point,
Title block
Title block, title block,
Torso pictogram
Torso pictogram, torso pictogram,
The vector stencils library "Sales flowchart" contains 62 sales process flow chart symbols.
Use these flow chart icon set to draw your sales flowcharts, workflow diagrams and process charts with the ConceptDraw PRO diagramming and vector drawing software.
The sales process flowchart symbols library "Sales flowchart" is included in the Sales Flowcharts solution from the Marketing area of ConceptDraw Solution Park.
Annotation
Annotation, annotation,
Card
Card, card,
Check / audit (diamond)
Check / audit (diamond), check, audit,
Check / audit (square)
Check / audit (square), check, audit,
Collate
Collate, collate,
Comment / note symbol (brace)
Comment / note symbol (brace), brace callout, comment, note,
Communication link
Communication link, communication link,
Compare (diamond)
Compare (diamond), compare,
Compare (square)
Compare (square), compare,
Completed form
Completed form, completed form, document,
Concurrency symbol (fork / join)
Concurrency symbol (fork / join), concurrency symbol,
Conditional selector
Conditional selector, conditional selector,
Control transfer
Control transfer, control transfer,
Database
Database, database,
Data input / output
Data input / output, data input, data output,
Decision
Decision, decision,
Decision indicator - No
Decision indicator - No, decision indicator, no,
Decision indicator - Yes
Decision indicator - Yes, decision indicator, yes,
Delay
Delay, delay,
Direct access storage
Direct access storage, direct access storage,
Disk storage
Disk storage, disk storage,
Display
Display, display,
Divided process (table view)
Divided process (table view), divided process,
Document
Document, document,
Entity (rounded)
Entity (rounded), entity,
Event
Event, event,
Extract
Extract, extract, part, device,
Flow line
Flow line, flow line, arrow, connector,
Internal storage
Internal storage, internal storage,
Junction symbol
Junction symbol, junction symbol,
Lined document
Lined document, lined document,
Lined / shaded process
Lined / shaded process, lined process, shaded process,
Loop limit
Loop limit, loop limit,
Manual file
Manual file, manual file,
Manual input
Manual input, manual input,
Manual operation
Manual operation, manual operation,
Merge
Merge, merge,
Multi document
Multi document, multi document,
Multi process
Multi process, multi process,
Off-page reference - arrow
Off-page reference - arrow, off-page reference,
Off-page reference - incoming
Off-page reference - incoming, off-page reference,
Off-page reference - outgoing
Off-page reference - outgoing, off-page reference,
On-page reference/ Inspection point
On-page reference/ Inspection point, on-page reference, inspection point,
Or
Or, or,
Page
Page, page,
Paper tape
Paper tape, paper tape,
Predefined process
Predefined process, subroutine, predefined process,
Prepare conditional
Prepare conditional, preparation, prepare conditional,
Process step
Process step, process step,
Reference point
Reference point, reference point,
Sequential access storage
Sequential access storage, sequential access storage,
Sort
Sort, sort,
Start (circle)
Start (circle), start,
Start (ellipse)
Start (ellipse), start,
Stickman pictogram
Stickman pictogram, stickman pictogram,
Stored data
Stored data, stored data,
Summary
Summary, summary,
Tagged document
Tagged document, tagged document, document,
Tagged process
Tagged process, tagged process,
Terminal point
Terminal point, terminal point,
Title block
Title block, title block,
Torso pictogram
Torso pictogram, torso pictogram,
The vector stencils library "Cable TV" contains 64 symbols of cable TV network equipment.
Use these shapes for drawing CATV system design floor plans, network topology diagrams, wiring diagrams and cabling layout schemes in the ConceptDraw PRO diagramming and vector drawing software.
The vector stencils library "Cable TV" is included in the Electric and Telecom Plans solution from the Building Plans area of ConceptDraw Solution Park.
Output Directional Tap 1
Output Directional Tap 1, output directional tap,
Output Directional Tap 2
Output Directional Tap 2, output directional tap,
Output Directional Tap 3
Output Directional Tap 3, output directional tap,
Output Directional Tap 4
Output Directional Tap 4, output directional tap,
Output Directional Tap 5
Output Directional Tap 5, output directional tap,
2-way Splitter
2-way Splitter, splitter,
3-way Splitter
3-way Splitter, splitter,
4-way Splitter
4-way Splitter, splitter,
AC Power Block
AC Power Block, AC, power block,
Bond
Bond, bond,
Down Guy
Down Guy, down guy,
Building Guy and Anchor
Building Guy and Anchor, building guy, anchor,
Rock Guy with Anchor
Rock Guy with Anchor, rock guy, anchor,
Down Guy with Anchor
Down Guy with Anchor, down guy, anchor,
Pole-to-Pole Guy
Pole-to-Pole Guy, pole-to-pole guy,
Sidewalk Down Guy with Anchor
Sidewalk Down Guy with Anchor, sidewalk down guy, anchor,
Sidewalk Down Guy
Sidewalk Down Guy, sidewalk down guy,
Slack Span Messenger Wire
Slack Span Messenger Wire, slack span messenger wire,
Tensioned Messenger Wire w/out cable
Tensioned Messenger Wire w/out cable, tensioned messenger wire,
Tensioned Messenger Wire
Tensioned Messenger Wire, tensioned messenger wire,
Ground
Ground, ground,
Joint Usage (Power & Telephone Pole)
Joint Usage (Power & Telephone Pole), joint usage pole, joint use pole, power, telephone,
Joint Usgae Pole with Transformer
Joint Usgae Pole with Transformer, joint usage pole, joint use pole, transformer,
Strut
Strut, strut,
Tree Guy with Anchor
Tree Guy with Anchor, tree guy, anchor,
Push Brace (smaller pole in actual relative position)
Push Brace (smaller pole in actual relative position), push brace, pole,
Extension Arm
Extension Arm, extension arm,
Built CATV Pole
Built CATV Pole, built CATV pole,
Proposed CATV Pole
Proposed CATV Pole, proposed CATV pole,
Directional Tap 1
Directional Tap 1, directional tap,
Directional Tap 2
Directional Tap 2, directional tap,
Manhole
Manhole, manhole,
Telephone Pole
Telephone Pole, telephone pole,
Riser Pole
Riser Pole, riser pole,
Vault Handheld
Vault Handheld, vault handheld,
Fixed Equalizer
Fixed Equalizer, fixed equalizer,
Fixed Flat Attenuators
Fixed Flat Attenuators, fixed flat attenuators,
Other Supporting Structures
Other Supporting Structures, supporting structures,
Pedestal - Underground Routing
Pedestal - Underground Routing, pedestal, underground routing,
Power Pole
Power Pole, power pole,
Direct Buried Underground Routing
Direct Buried Underground Routing, direct buried underground routing,
Duct Line Underground Routing
Duct Line Underground Routing, duct line, underground routing,
Line Terminations
Line Terminations, line terminations,
2-Way Optical Splice Location
2-Way Optical Splice Location, optical splice location,
3-Way Optical Splice Location
3-Way Optical Splice Location, optical splice location,
4-Way Optical Splice Location
4-Way Optical Splice Location, optical splice location,
> 4-Way Optical Splice Location
> 4-Way Optical Splice Location, optical splice location,
Optical Amplifier
Optical Amplifier, optical amplifier,
Cable AC Power Combiner
Cable AC Power Combiner, cable AC power combiner,
Optical Fiber Cable
Optical Fiber Cable, optical fiber cable,
Optical Connector
Optical Connector, optical connector,
Wavelength Demultiplexer
Wavelength Demultiplexer, wavelength demultiplexer,
Wavelength Multiplexer
Wavelength Multiplexer, wavelength multiplexer,
Optical Transmitter
Optical Transmitter, optical transmitter,
Optical Transmitter
Optical Transmitter, optical transmitter,
Optical Node
Optical Node, optical node,
Optical Splitter
Optical Splitter, optical splitter,
Headend (Signal Processing)
Headend (Signal Processing), headend, signal processing,
Node
Node, node,
Primary Hub
Primary Hub, primary hub,
Secondary Hub
Secondary Hub, secondary hub,
Coaxial Splice
Coaxial Splice, coaxial splice,
Power Supply
Power Supply, power supply,
Variable Equalizer
Variable Equalizer, variable equalizer,
The vector stencils library "Delay elements" contains 12 symbols of delay elements for drawing electrical schematics and electronic circuit diagrams.
"An analog delay line is a network of electrical components connected in series, where each individual element creates a time difference or phase change between its input signal and its output signal. It operates on analog signals whose amplitude varies continuously. An example is a bucket-brigade device. Other types of delay line include acoustic, magnetostrictive, and surface acoustic wave devices. A series of RC networks can be cascaded to form a delay. A long transmission line can also provide a delay element. The delay time of an analog delay line may be only a few nanoseconds or several milliseconds, limited by the practical size of the physical medium used to delay the signal and the propagation speed of impulses in the medium." [Analog delay line. Wikipedia]
The symbols example "Design elements - Delay elements" was drawn using the ConceptDraw PRO diagramming and vector drawing software extended with the Electrical Engineering solution from the Engineering area of ConceptDraw Solution Park.
Delay element symbols
Delay element symbols, delay element,
The design elements library "Cable TV" contains 64 symbols of CATV network equipment.
"Cable television is a system of distributing television programs to subscribers via radio frequency (RF) signals transmitted through coaxial cables or light pulses through fiber-optic cables. This contrasts with traditional broadcast television (terrestrial television) in which the television signal is transmitted over the air by radio waves and received by a television antenna attached to the television. FM radio programming, high-speed Internet, telephone service, and similar non-television services may also be provided through these cables.
The abbreviation CATV is often used for cable television." [Cable television. Wikipedia]
Use the shapes library "Cable TV" to draw CATV system design floor plans, network topology diagrams, wiring diagrams and cabling layout schemes using the ConceptDraw PRO diagramming and vector drawing software.
The vector stencils library "Cable TV" is included in the Electric and Telecom Plans solution from the Building Plans area of ConceptDraw Solution Park.
Cable TV symbols
Cable TV symbols, wavelength multiplexer, wavelength demultiplexer, vault handheld, variable equalizer, tree guy, anchor, tensioned messenger wire, telephone pole, supporting structures, strut, splitter, slack span messenger wire, sidewalk down guy, anchor, sidewalk down guy, secondary hub, rock guy, anchor, riser pole, push brace, pole, proposed CATV pole, primary hub, power supply, power pole, pole-to-pole guy, pedestal, underground routing, output directional tap, optical transmitter, optical splitter, optical splice location, optical node, optical fiber cable, optical connector, optical amplifier, node, manhole, line terminations, joint usage pole, joint use pole, transformer, joint usage pole, joint use pole, power, telephone, headend, signal processing, ground, fixed flat attenuators, fixed equalizer, extension arm, duct line, underground routing, down guy, anchor, down guy, directional tap, direct buried underground routing, coaxial splice, cable AC power combiner, built CATV pole, building guy, anchor, bond, AC, power block,
The vector stencils library "HR flowchart" contains 62 flowchart symbols.
Use it to draw your HR flowcharts, workflow diagrams and process charts with the ConceptDraw PRO diagramming and vector drawing software.
The flow chart symbols library "HR flowchart" is included in the HR Flowcharts solution from the Management area of ConceptDraw Solution Park.
Annotation
Annotation, annotation,
Card
Card, card,
Check / audit (diamond)
Check / audit (diamond), check, audit,
Check / audit (square)
Check / audit (square), check, audit,
Collate
Collate, collate,
Comment / note symbol (brace)
Comment / note symbol (brace), brace callout, comment, note,
Communication link
Communication link, communication link,
Compare (diamond)
Compare (diamond), compare,
Compare (square)
Compare (square), compare,
Completed form
Completed form, completed form, document,
Concurrency symbol (fork / join)
Concurrency symbol (fork / join), concurrency symbol,
Conditional selector
Conditional selector, conditional selector,
Control transfer
Control transfer, control transfer,
Data input / output
Data input / output, data input, data output,
Database
Database, database,
Decision
Decision, decision,
Decision indicator - No
Decision indicator - No, decision indicator, no,
Decision indicator - Yes
Decision indicator - Yes, decision indicator, yes,
Delay
Delay, delay,
Direct access storage
Direct access storage, direct access storage,
Disk storage
Disk storage, disk storage,
Display
Display, display,
Divided process (table view)
Divided process (table view), divided process,
Document
Document, document,
Entity (rounded)
Entity (rounded), entity,
Event
Event, event,
Extract
Extract, extract, part, device,
Flow line
Flow line, flow line, arrow, connector,
Internal storage
Internal storage, internal storage,
Junction symbol
Junction symbol, junction symbol,
Lined document
Lined document, lined document,
Lined / shaded process
Lined / shaded process, lined process, shaded process,
Loop limit
Loop limit, loop limit,
Manual file
Manual file, manual file,
Manual input
Manual input, manual input,
Manual operation
Manual operation, manual operation,
Merge
Merge, merge,
Multi document
Multi document, multi document,
Multi process
Multi process, multi process,
Off-page reference - arrow
Off-page reference - arrow, off-page reference,
Off-page reference - incoming
Off-page reference - incoming, off-page reference,
Off-page reference - outgoing
Off-page reference - outgoing, off-page reference,
On-page reference/ Inspection point
On-page reference/ Inspection point, on-page reference, inspection point,
Or
Or, or,
Page
Page, page,
Paper tape
Paper tape, paper tape,
Predefined process
Predefined process, subroutine, predefined process,
Prepare conditional
Prepare conditional, preparation, prepare conditional,
Process step
Process step, process step,
Reference point
Reference point, reference point,
Sequential access storage
Sequential access storage, sequential access storage,
Sort
Sort, sort,
Start (circle)
Start (circle), start,
Start (ellipse)
Start (ellipse), start,
Stickman pictogram
Stickman pictogram, stickman pictogram,
Stored data
Stored data, stored data,
Summary
Summary, summary,
Tagged document
Tagged document, tagged document, document,
Tagged process
Tagged process, tagged process,
Terminal point
Terminal point, terminal point,
Title block
Title block, title block,
Torso pictogram
Torso pictogram, torso pictogram,
The vector stencils library "Sales flowchart" contains 62 sales process flow chart symbols.
Use these flow chart icon set to draw your sales flowcharts, workflow diagrams and process charts with the ConceptDraw PRO diagramming and vector drawing software.
The sales process flowchart symbols library "Sales flowchart" is included in the Sales Flowcharts solution from the Marketing area of ConceptDraw Solution Park.
Annotation
Annotation, annotation,
Card
Card, card,
Check / audit (diamond)
Check / audit (diamond), check, audit,
Check / audit (square)
Check / audit (square), check, audit,
Collate
Collate, collate,
Comment / note symbol (brace)
Comment / note symbol (brace), brace callout, comment, note,
Communication link
Communication link, communication link,
Compare (diamond)
Compare (diamond), compare,
Compare (square)
Compare (square), compare,
Completed form
Completed form, completed form, document,
Concurrency symbol (fork / join)
Concurrency symbol (fork / join), concurrency symbol,
Conditional selector
Conditional selector, conditional selector,
Control transfer
Control transfer, control transfer,
Database
Database, database,
Data input / output
Data input / output, data input, data output,
Decision
Decision, decision,
Decision indicator - No
Decision indicator - No, decision indicator, no,
Decision indicator - Yes
Decision indicator - Yes, decision indicator, yes,
Delay
Delay, delay,
Direct access storage
Direct access storage, direct access storage,
Disk storage
Disk storage, disk storage,
Display
Display, display,
Divided process (table view)
Divided process (table view), divided process,
Document
Document, document,
Entity (rounded)
Entity (rounded), entity,
Event
Event, event,
Extract
Extract, extract, part, device,
Flow line
Flow line, flow line, arrow, connector,
Internal storage
Internal storage, internal storage,
Junction symbol
Junction symbol, junction symbol,
Lined document
Lined document, lined document,
Lined / shaded process
Lined / shaded process, lined process, shaded process,
Loop limit
Loop limit, loop limit,
Manual file
Manual file, manual file,
Manual input
Manual input, manual input,
Manual operation
Manual operation, manual operation,
Merge
Merge, merge,
Multi document
Multi document, multi document,
Multi process
Multi process, multi process,
Off-page reference - arrow
Off-page reference - arrow, off-page reference,
Off-page reference - incoming
Off-page reference - incoming, off-page reference,
Off-page reference - outgoing
Off-page reference - outgoing, off-page reference,
On-page reference/ Inspection point
On-page reference/ Inspection point, on-page reference, inspection point,
Or
Or, or,
Page
Page, page,
Paper tape
Paper tape, paper tape,
Predefined process
Predefined process, subroutine, predefined process,
Prepare conditional
Prepare conditional, preparation, prepare conditional,
Process step
Process step, process step,
Reference point
Reference point, reference point,
Sequential access storage
Sequential access storage, sequential access storage,
Sort
Sort, sort,
Start (circle)
Start (circle), start,
Start (ellipse)
Start (ellipse), start,
Stickman pictogram
Stickman pictogram, stickman pictogram,
Stored data
Stored data, stored data,
Summary
Summary, summary,
Tagged document
Tagged document, tagged document, document,
Tagged process
Tagged process, tagged process,
Terminal point
Terminal point, terminal point,
Title block
Title block, title block,
Torso pictogram
Torso pictogram, torso pictogram,
The vector stencils library "Transformers and windings" contains 29 element symbols of transformers, windings, couplers, metering devices, transductors, magnetic cores, chokes, and a variometer.
Use it to design the electromechanical device schematics and electronic circuit diagrams.
"A transformer is an electrical device that transfers energy between two circuits through electromagnetic induction. Transformers may be used in step-up or step-down voltage conversion, which 'transforms' an AC voltage from one voltage level on the input of the device to another level at the output terminals. This special function of transformers can provide control of specified requirements of current level as an alternating current source, or it may be used for impedance matching between mismatched electrical circuits to effect maximum power transfer between the circuits.
A transformer most commonly consists of two windings of wire that are wound around a common core to induce tight electromagnetic coupling between the windings. The core material is often a laminated iron core. The coil that receives the electrical input energy is referred to as the primary winding, while the output coil is called the secondary winding.
An alternating electric current flowing through the primary winding (coil) of a transformer generates an electromagnetic field in its surroundings and a varying magnetic flux in the core of the transformer. By electromagnetic induction this magnetic flux generates a varying electromotive force in the secondary winding, resulting in a voltage across the output terminals. If a load impedance is connected across the secondary winding, a current flows through the secondary winding drawing power from the primary winding and its power source." [Transformer. Wikipedia]
"An electromagnetic coil (or simply a "coil") is formed when a conductor is wound around a core or form to create an inductor or electromagnet. When electricity is passed through a coil, it generates a magnetic field. One loop of wire is usually referred to as a turn or a winding, and a coil consists of one or more turns. For use in an electronic circuit, electrical connection terminals called taps are often connected to a coil. Coils are often coated with varnish or wrapped with insulating tape to provide additional insulation and secure them in place. A completed coil assembly with one or more set of coils and taps is often called the windings.
Windings are used in transformers, electric motors, inductors, solenoids, loudspeakers, and many other applications." [Electromagnetic coil. Wikipedia]
The shapes example "Design elements - Transformers and windings" was drawn using the ConceptDraw PRO diagramming and vector drawing software extended with the Electrical Engineering solution from the Engineering area of ConceptDraw Solution Park.
Transformer and winding symbols
Transformer and winding symbols, variometer, triplex, induction voltage regulator, transformer, magnetic-core, mutual inductor, transformer, magnetic-core, 2 windings, adjustable, transformer, magnetic-core, 1 winding, adjustable, transformer, magnetic-core, transformer, air-core, mutual inductor, transformer, air-core, 2 windings, adjustable, transformer, air-core, 1 winding, adjustable, transformer, air-core, transformer, transductor, saturating transformer, potential transformer, winding, potential transformer, outdoor metering device, magnetic core, linear coupler, induction voltage regulator, current transformer, bushing-type, current transformer, coaxial choke, magnetic core, choke, reactor, adjustable transformer, 1 winding, adjustable transformer,  mutual inductor, 1-phase, induction voltage regulator,
The vector stencils library "Logic gate diagram" contains 17 element symbols for drawing the logic gate diagrams.
"To build a functionally complete logic system, relays, valves (vacuum tubes), or transistors can be used. The simplest family of logic gates using bipolar transistors is called resistor-transistor logic (RTL). Unlike simple diode logic gates (which do not have a gain element), RTL gates can be cascaded indefinitely to produce more complex logic functions. RTL gates were used in early integrated circuits. For higher speed and better density, the resistors used in RTL were replaced by diodes resulting in diode-transistor logic (DTL). Transistor-transistor logic (TTL) then supplanted DTL. As integrated circuits became more complex, bipolar transistors were replaced with smaller field-effect transistors (MOSFETs); see PMOS and NMOS. To reduce power consumption still further, most contemporary chip implementations of digital systems now use CMOS logic. CMOS uses complementary (both n-channel and p-channel) MOSFET devices to achieve a high speed with low power dissipation." [Logic gate. Wikipedia]
The symbols example "Design elements - Logic gate diagram" was drawn using the ConceptDraw PRO diagramming and vector drawing software extended with the Electrical Engineering solution from the Engineering area of ConceptDraw Solution Park.
Logic gate symbols
Logic gate symbols, operational amplifier, gate, open-collector output, gate, Schmitt trigger input, buffer, OR gate, Norton opamp, Norton operational amplifier, NOT gate, inverter, NOR gate, NOT OR, NAND gate, NOT AND, EX-OR gate, exclusive-OR gate, EX-NOR gate, exclusive-NOR gate, AND gate,