Seven Segment Display
Seven Segment Clock Display
Seven Segment Bi Color
Seven Segment Jumbo Display
Alphanumeric 14/16 Digit Display
Dotmatrix Display
Arrow LED Display
LED Bar Graph
LED Light Bar
Smart city and public information systems require clear visual communication of numerical values, characters, symbols, directions and changing public information. Alfa Electronic Components supplies Dotmatrix Displays, 7 Segment LED Displays, Jumbo 7 Segment Displays, Alphanumeric Segment Displays and Arrow LED Displays for integration into public information boards, traffic-related equipment, citizen information systems and smart infrastructure electronics.
Smart city infrastructure uses electronic displays to communicate information across transportation facilities, public spaces, municipal infrastructure and other connected systems.
Unlike equipment that displays only numerical values, public information systems may need to communicate a combination of numbers, letters, symbols and directions.
Dotmatrix Displays can be used for character, symbol and simple graphical indication, making them particularly relevant to electronic public information equipment.
Alphanumeric Segment Displays can be considered where both letters and numbers need to be presented, while 7 Segment LED Displays are suitable for numerical information such as counts, measurements and other values.
For applications requiring larger numerical characters, the Jumbo 7 Segment Display can be considered. Arrow LED Displays can also support directional indication in public guidance and traffic-related electronic systems.
Alfa Electronic Components offers multiple LED display types for manufacturers and system developers building smart city and public information equipment.
The 1 Digit 7 Segment Display is a numeric LED display designed to present numbers from 0 to 9 clearly in electronic instruments, digital meters,…
A Two Digit Seven Segment Display is a compact LED numeric display designed to present values from 00 to 99 in digital counters, timers, measuring…
A 3 Digit 7 Segment Display is an integrated numeric LED display designed to present values from 000 to 999 in digital meters, counters, timers,…
A 4 Digit 7 Segment Display is an integrated numeric LED display designed to present values from 0000 to 9999 in digital meters, counters, timers,…
A 5 Digit 7 Segment Display is an integrated numeric LED display designed to present values from 00000 to 99999 in counters, measuring instruments, weighing…
A 6 Digit 7 Segment Display is an integrated numeric LED display designed to present values from 000000 to 999999 in counters, totalisers, meters, weighing…
A Single Digit Bi Color Seven Segment Display is a dual-color numeric LED display designed to show one digit from 0 to 9 while supporting…
A Seven Segment Jumbo Display is a large-size numeric LED display designed for applications where numbers must be visible from a longer distance. It is…
A 14/16 Segment Alphanumeric Display is an LED character display designed to show numbers, alphabets and selected symbols more clearly than a standard seven segment…
A 5x7 Round Dot Matrix Display is an LED character display made with a 5-column by 7-row dot arrangement, designed to show alphabets, numbers, symbols…
A 5x7 Square Dot Matrix Display is an LED character display designed with a 5-column by 7-row matrix arrangement, using square LED dots to show…
A 5x7 Round Bi Colour Dot Matrix Display is a dual-colour LED matrix display designed to show alphabets, numbers, symbols, short messages and status indications…
An 8x8 Round Dot Matrix Display is an LED matrix display designed with an 8-column by 8-row round dot arrangement, suitable for displaying alphabets, numbers,…
An 8x8 Bi Color Dot Matrix Display is a dual-color LED matrix display designed with an 8-column by 8-row round dot arrangement. It is suitable…
A Single Color LED Bar Graph is a linear LED display used to show level, progress, status, signal strength, battery condition, audio level, process value…
A Multi Color LED Bar Graph is a linear LED display used to show level, progress, signal strength, battery condition, audio level, process value or…
A Light Bar – Square Series is a single color LED indicator display designed in a square body format for status indication, signal indication, panel…
A Light Bar – Rectangle Series is a rectangular LED indicator display used for status indication, signal indication, panel indication, equipment display and machine interface…
A Light Bar – Round Series is a circular LED indicator display used for status indication, signal indication, panel indication, equipment display and machine interface…
| Application | Suitable Display Products |
| Public Information Boards | 5×7 Round Dotmatrix Display, 5×7 Square Dotmatrix Display, 8×8 Round Dotmatrix Display, Alphanumeric Segment Display |
| Citizen Information Systems | Alphanumeric Segment Display, 5×7 Round Dotmatrix Display, 8×8 Round Dotmatrix Display |
| Traffic Information Equipment | Directional LED arrow display, Jumbo 7 Segment Display, Alphanumeric Segment Display, Dotmatrix Displays |
| Directional Public Guidance | Directional LED arrow display, Arrow LED display up-down |
| Public Transport Information Equipment | Alphanumeric Segment Display, 5×7 Round Dotmatrix Display, 8×8 Round Dotmatrix Display |
| Numerical Information Displays | 3 Digit 7 Segment Led Display, 4 Digit 7 Segment Led Display, 5 Digit 7 Segment Led Display, 6 Digit 7 Segment Led Display |
| Queue & Service Information | 2 Digit 7 Segment Led Display, 3 Digit 7 Segment Led Display, 4 Digit 7 Segment Led Display |
| Large Numerical Information | Jumbo 7 Segment Display |
| Public Digital Clock | 4 Digit 7 Segment Clock Led Display, 6 Digit 7 Segment Clock Led Display |
| Bi-Colour Character / Status Indication | 5×7 Round Bi Color Dotmatrix Display, 8×8 Bi Color Dotmatrix Display |
| Character & Symbol Indication | 5×7 Round Dotmatrix Display, 5×8 Round Dotmatrix Display, 8×8 Round Dotmatrix Display |
Electronic displays allow numerical values, characters, symbols and directions to be communicated visually within public infrastructure and information equipment.
Dotmatrix Displays are particularly useful where electronic equipment needs to present characters, symbols or simple graphical information rather than numbers alone.
Different matrix configurations allow manufacturers to select a display according to the information and equipment design.
Seven Segment LED Displays provide a clear format for numerical values such as counts, queue numbers, measurements and other changing public information.
Arrow LED display up-down and Directional LED arrow display can be incorporated into electronic guidance equipment where users need clear directional information.
Some public information needs to remain visible from farther away.
The Jumbo 7 Segment Display can be considered for applications requiring larger numerical characters.
4 Digit and 6 Digit 7 Segment Clock Led Displays provide dedicated display options for electronic public clock and time indication systems.
Selecting the appropriate LED display depends on the information being communicated, expected viewing distance, installation environment and electronic design.
Start by identifying the type of information the equipment needs to display.
Numerical values → Seven Segment LED Displays
Large numerical values → Jumbo 7 Segment Display
Letters and numbers → Alphanumeric Segment Display
Characters and symbols → Dotmatrix Displays
Directional information → Arrow LED Displays
Time information → Clock LED Displays
Bi-colour information or status → Bi Color Dotmatrix Displays / Single Digit Bi Color
For numerical public information, determine the maximum number of positions required.
Short numerical values → 2 Digit / 3 Digit 7 Segment Led Display
Medium numerical values → 4 Digit 7 Segment Led Display
Extended numerical information → 5 Digit / 6 Digit 7 Segment Led Display
If the system needs to communicate information beyond numbers, consider the amount and type of character or symbol information required.
5×7, 5×8 and 8×8 Dotmatrix Displays provide different matrix configurations for character and symbol-based applications.
Public information may be viewed from significantly different distances depending on the installation.
A display integrated into a service kiosk will have different character-size requirements from information equipment positioned across a public area.
Where larger numerical characters are required, the Jumbo 7 Segment Display can be considered.
If the equipment is intended for navigation or guidance, determine the direction information required by the system.
Directional LED arrow display and Arrow LED display up-down can support different guidance arrangements.
Display colour should be selected according to the equipment design, required visual contrast, information hierarchy and available display configuration.
Bi-colour Dotmatrix Displays can be considered where colour differentiation forms part of the information system.
Important integration parameters include:
Display type
Number of digits
Matrix configuration
Character height
Display dimensions
Arrow orientation
Pin configuration
PCB layout
Available mounting space
Driver circuit compatibility
Viewing angle
Equipment enclosure dimensions
These requirements should be considered before selecting the final display configuration.
Smart city equipment may be installed in public buildings, transport facilities, service centres or other infrastructure environments.
Ambient lighting, expected viewing distance, equipment enclosure and installation conditions should therefore be considered during display selection.
Smart city and public information equipment may require several different types of information to be communicated within the same electronic assembly.
For example, a public information system may need to combine:
Numerical Information
Characters & Symbols
Directional Arrows
Time Information
Status Indication
Queue or Counter Numbers
Zone or Location Information
Depending on the equipment design, Seven Segment LED Displays, Dotmatrix Displays, Alphanumeric Segment Displays, Arrow LED Displays and Clock LED Displays can be arranged within a custom display configuration.
Alfa Electronic Components can discuss application requirements and help identify suitable display components or configurations for smart city and public information equipment.
Numerical and Dotmatrix display combinations
Seven Segment and Arrow display assemblies
Character and numerical display combinations
Multi-display electronic assemblies
Bi-colour display modules
Public information display configurations
Application-specific LED display modules
Alfa LED display products can be considered for integration into electronic equipment and systems including:
Public Information Systems
Citizen Information Systems
Electronic Public Information Boards
Traffic Information Equipment
Public Guidance Systems
Directional Information Displays
Public Transport Information Equipment
Queue Information Systems
Service Counter Displays
Public Digital Clocks
Numerical Information Displays
Municipal Information Equipment
Public Facility Electronics
Smart Infrastructure Equipment
Electronic Guidance Systems
Smart City Control Equipment
OEM Public Information Systems
The appropriate display depends on the information being communicated. Dotmatrix Displays can be considered for characters and symbols, Alphanumeric Segment Displays for letters and numbers, and Seven Segment LED Displays for numerical information.
Alfa offers 5×7 Round Dotmatrix Display, 5×7 Square Dotmatrix Display, 5×8 Round Dotmatrix Display and 8×8 Round Dotmatrix Display options for character and symbol-based electronic applications. The correct configuration depends on the equipment design and required information.
Yes. LED display components can be integrated into smart city electronic equipment for numerical values, characters, symbols, time information and directional indication. The appropriate display type depends on the specific system requirements.
Depending on the number of numerical positions required, 2 Digit through 6 Digit 7 Segment Led Displays can be considered. A Jumbo 7 Segment Display can be used where larger numerical characters are required.
The Alphanumeric Segment Display can be considered where both alphabetical and numerical information needs to be displayed. Dotmatrix displays can also support character-based information depending on the system design.
Directional LED arrow display can be considered for electronic systems requiring directional guidance, while Arrow LED display up-down can be used where up/down indication is required.
Yes. 5×7 Round Bi Color Dotmatrix Display and 8×8 Bi Color Dotmatrix Display can be considered where the equipment design requires character, symbol or status information with bi-colour differentiation.
A 4 Digit 7 Segment Clock Led Display can be considered for hour-and-minute indication, while a 6 Digit 7 Segment Clock Led Display can be used where hours, minutes and seconds need to be displayed.
Start by determining whether the system needs to display numbers, letters, symbols, directions or time. Then consider character size, viewing distance, display dimensions, colour, PCB requirements and the overall equipment design.
Custom display requirements can be discussed according to the application, required information, display arrangement, dimensions and available technical specifications. Drawings, samples or application details can help in understanding the requirement.
Alfa Electronic Components specializes in 7 Segment LED Displays, Jumbo Displays, Dot Matrix Modules, Alphanumeric Displays, LED Bar Graphs, Arrow Displays, Clock Displays, and Custom LED Display Solutions for industrial and electronic applications since 1992.
