However this is a big disadvantage because in case a project requires connecting other components to the microcontroller then the number of I/O pins will not be enough. The common 4 digit displays usually have twelve pins used to communicate with the microcontroller using multiplexing. How to use 7-segment Display with Arduino.I have explained in detail how the seven segment displays work and how they can be used with Arduino in a previous post that you can check out using the link below. TM1637 4 Digit 7 Segment Display Hardware Overview.Ĥ digit 7 segment displays are simply an arrangement of four seven segment display modules that use the multiplexing technique so that they can be used on microcontrollers with a limited amount of I/O pins. The TM1637 4 digit 7 segment display is among these displays and in this tutorial I would like to show how this display can be interfaced with Arduino in a number of applications. This data can be sensor readings like on cookers and coolers or time in digital clocks. They are used to display information in form of numbers and some letters. 4 digit 7-segment displays are among the commonest display components in several of our household appliances like digital radios, clocks, refrigerators, air conditioners and many others.
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