Using analog serial port to drive74HC164, there is always a slight glow in segments that should not be lit, commonly referred to as ghosting, which is particularly noticeable at night. However, using serial port driving yields much better results; when external light is dim, ghosting is slightly visible but does not significantly affect viewing. This … Read more
74HC138 is a CMOS 3-to-8 line decoder integrated circuit, featuring 3 input pins and 8 output pins, capable of converting 3 bits of binary data into 8 corresponding output signals. The 74HC138 chip operates within a supply voltage range of 2V to 6V, while the 74LS138 chip operates within a supply voltage range of 4.75V … Read more
What is the difference between static and dynamic displays? How can we distinguish between common anode and common cathode? How do we calculate the segment codes? This article will clarify everything, and you will be able to get started after reading! 1. Static Display vs Dynamic Display: It’s not about “motion” but the “wiring logic” … Read more
7-segment displays are inexpensive and easy to drive, capable of showing numbers 0-9, characters A, b, C, d, E, F, P, q, L, etc. They are widely used in electronic products for simple data display. For example, in temperature controllers for temperature and setting parameter display, electronic clocks for time display, and elevators for floor … Read more
This tutorial focuses on how to use the TM1637 4-digit display module on the Raspberry Pi Pico. Required Components – Raspberry Pi Pico or Pico W– TM1637 4-digit display module– Breadboard and jumper wires– microUSB data cable TM1637 is an LED (Light Emitting Diode) driver control circuit with a keyboard scanning interface, integrating MCU digital … Read more