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7-Segment LED Digital Display

Model:

276-075

 | Catalog #: 276-075
Price:
$2.49
$2.49
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Product Summary

What time is it?

This light-emitting diode, or LED, fits easily into an alarm clock or signboard electrical circuit.

  • Long-lasting light
  • Perfect for displays
Pricing and availability: Please note that all prices are subject to change without prior notice. Prices advertised on this site are for online orders only. Prices on some items may differ from those advertised in RadioShack stores. All merchandise may not be available at all stores, and all stores may not participate in all sales promotions. We recommend you contact the store to confirm product availability and price.

What's in the box

  • 7-Segment LED digital display
 

Shipping

Usually ships in 1 - 2 business days

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Other ways to get it


In store: Check availability
By phone: 1-800-843-7422

Manufacturer Warranty

  • Parts: 90 days
  • Labor: month
Tech Specs

Customer Reviews

REVIEW SNAPSHOT®

by PowerReviews
RadioShack7-Segment LED Digital Display
 
4.5

(based on 11 reviews)

Ratings Distribution

  • 5 Stars

     

    (7)

  • 4 Stars

     

    (3)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (1)

  • 1 Stars

     

    (0)

89%

of respondents would recommend this to a friend.

Pros

  • Reliable (8)
  • Versatile (4)
  • Good length (3)
  • Rugged (3)
  • Warranty (3)

Cons

  • Wears easily (4)

Best Uses

      • Reviewer Profile:
      • Enthusiast (3), Power user (3)
      • Primary use:
      • Personal (8)
      • Was this a gift?:
      • No (6)

    Reviewed by 11 customers

    Sort by

    Displaying reviews 1-10

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    (3 of 3 customers found this review helpful)

     
    4.0

    COUNTDOWN COMMENCING!!!

    By Great Leader Technus

    from Solano County, CA

    About Me Enthusiast

    Verified Reviewer

    Pros

    • Consistent Performance

    Cons

    • Not Enough Information

    Best Uses

    • Dorm Room
    • High-End Equipment
    • Robotics
    • Science Experiments

    Comments about RadioShack 7-Segment LED Digital Display:

    This LED - Dsplay is great, but I wish the packaging would which segment is controlled by which anode. And that resistors are mandatory to use one. It took two entire days of research,since Common Anode LED Displays are more popular than the Common Cathode LED Displays, but I got it took work.

    The pins and segments work like this:

    Anode A (Pin 14) controls the Top
    Anode B (Pin 13) controls the Upper Right
    Pin 9 (Anode DP) controls the Decimal Point
    Anode C (Pin 8) controls the Lower Right
    Anode D (Pin 7) Controls the Bottom
    Anode E (Pin 6) Controls the Lower Left
    Anode F (Pin 1) Controls the Upper Left
    Anode G (Pin 2) Controls the Middle

    These Segment LED displays use a special IC called a decoder, but an Arduino will do the same. I've attached pictures!

    • Primary use:
    • Personal
    • Was this a gift?:
    • Yes

    (1 of 1 customers found this review helpful)

     
    5.0

    Fun learning tool

    By Josh the Arduino Enthusiast

    from Beaverton, OR

    About Me Casual User

    Verified Reviewer

    Pros

    • Cheap
    • Educational
    • Fun

    Cons

    • No Lhdp

    Best Uses

    • Clocks
    • Learning

    Comments about RadioShack 7-Segment LED Digital Display:

    I bought an Arduino last week and the fun of turning simple LEDs on and off had worn off. I stopped in at my local RS to see if there was anything I could plug into my breadboard and play with. Among other things I picked up one of these displays and had it working in a couple hours (including writing a sketch to control it).

    At first I just had it turning all the segments on one at a time, blinking, and doing it over again. Then I programmed some numbers in Arduino, and mapped a potentiometer to numbers 0-9 so that as you turned the potentiometer CW the displayed number increased to 9.

    Now, if you want to do much else with this thing (like add more than two to your Arduino), you're going to need to look into getting an 8-bit shift register for each display. Why? Because each display requires at least 7 pins on the Arduino (8 if you use the decimal point). Using shift registers you can daisy-chain as many as you like, with each one controlling its own display. And all you need are three pins from the Arduino no matter how many displays you're controlling.

    My only disappointment is that you can only control the right-hand decimal point. There's no pin to control the left-hand decimal point even though there appears to be a cut-out in the display for one. This isn't really much of a disappointment though since there isn't much use for it. If you have multiple displays then the problem is solved. Plus, since there are only 8 LEDs to control on the display, the 8-bit shift registers are a perfect application.

    • Primary use:
    • Personal
    • Was this a gift?:
    • No

    (2 of 2 customers found this review helpful)

     
    4.0

    Works good!

    By PaulAK83

    from Houston, Tx

    Pros

    • Consistent Performance

    Cons

      Best Uses

        Comments about RadioShack 7-Segment LED Digital Display:

        Works good for Arduino projects. Not sure if resistors are needed for Anodes. Heres a little Arduino sketch>https://docs.google.com/document/pub?id=1DTzfy0DRFRsTH7IdhGH3b2fIyVY7a3Xi085szVuNe2w

        • Primary use:
        • Personal
        • Was this a gift?:
        • No

        (0 of 1 customers found this review helpful)

         
        5.0

        Nice display

        By Computerman5668

        from gloucester, va

        About Me Enthusiast

        Pros

        • Consistent Performance
        • Versatile

        Cons

        • Incompatible
        • Wears Easily

        Best Uses

        • Clock

        Comments about RadioShack 7-Segment LED Digital Display:

        I used the display to make a basic clock

        • Primary use:
        • Personal
        • Was this a gift?:
        • No

        (5 of 9 customers found this review helpful)

         
        2.0

        not recommended

        By thomas

        from san diego, ca

        About Me Enthusiast

        Pros

          Cons

          • Mapping is poor

          Best Uses

            Comments about RadioShack 7-Segment LED Digital Display:

            the segments of the display are mapped for you on the back of the package. however 'anode X' still doesn't tell you which segment it controls until it is actually field tested. i don't recommend this product until it its diagram is clarified.

            • Primary use:
            • Business
            • Was this a gift?:
            • No

            (1 of 5 customers found this review helpful)

             
            4.0

            LED Display

            By LEDVIEW

            from CN

            Pros

            • Consistent Performance
            • Good Length
            • Good Warranty
            • Rugged
            • Versatile

            Cons

              Best Uses

                Comments about RadioShack 7-Segment LED Digital Display:

                would like to know more about led display

                (32 of 32 customers found this review helpful)

                 
                5.0

                Handy for Hackers

                By Brad Baudot

                from New England

                About Me Power User

                Verified Reviewer

                Pros

                • Available locally
                • Compact Size
                • Duplicate Cathode
                • Fits on Breadboard
                • Good Single Unit Price
                • Useful

                Cons

                • Dim
                • Package Specs Unclear
                • Uneven Segment Brightness

                Best Uses

                • Arduino Projects
                • Hobby projects
                • Microcontroller Output
                • Science Fair

                Comments about RadioShack 7-Segment LED Digital Display:

                Great to be able to buy this at a local Radio Shack. Saves time and money over other sources. This is a classic 7-segment (plus right-hand decimal point) red (655nm) LED display. The digit is 0.3 inches tall. The plastic carrier is 0.4 by 0.8 inches and stands up 0.2 inches from the circuit board. The pins are 0.2 inches long and are pre-tinned. Each segment ABCDEFG has an anode (+) pin. There are two duplicate cathode (-) pins. Lastly there is a right-hand decimal point pin, for a total of 10 pins. The pin grid is standard 0.1 inch spacing and 0.6 by 0.3 inch maximum.
                Segments are lettered clockwise starting with "A" at the top. The center segment is "G". The LEDs are a typical 20mA 1.7V see the attached scan for max values.

                • Primary use:
                • Personal
                • Was this a gift?:
                • No

                (0 of 4 customers found this review helpful)

                 
                5.0

                its awesome

                By bob

                from raleigh nc

                About Me Casual User

                Pros

                • Consistent Performance
                • Good Warranty

                Cons

                  Best Uses

                  • science projects

                  Comments about RadioShack 7-Segment LED Digital Display:

                  small and usefull

                  • Primary use:
                  • Personal
                  • Was this a gift?:
                  • No

                  (2 of 7 customers found this review helpful)

                   
                  5.0

                  great

                  By electrical engineer hog

                  from st.louis MO

                  About Me Power User

                  Pros

                  • Consistent Performance
                  • Good Length
                  • Good Warranty
                  • Rugged
                  • Versatile

                  Cons

                  • Pins Bend Easily
                  • Wears Easily

                  Best Uses

                  • Hobby

                  Comments about RadioShack 7-Segment LED Digital Display:

                  GREAT

                  • Primary use:
                  • Personal

                  (4 of 7 customers found this review helpful)

                   
                  5.0

                  Nice Common Cathode Display

                  By Twidget

                  from Illinois

                  About Me Power User

                  Verified Reviewer

                  Pros

                  • Consistent Performance
                  • Rugged
                  • Versatile

                  Cons

                  • Wears Easily

                  Best Uses

                  • High-End Equipment

                  Comments about RadioShack 7-Segment LED Digital Display:

                  Use in digital electronics training course. Comes with simple data sheet with pin reference designation. Perfect when used to compare 7447 and 7448 BCD's.

                  • Primary use:
                  • Business

                  Displaying reviews 1-10

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