74HC164

CH32V003F4P6 Microcontroller: Completely Eliminate Ghosting in 74HC164 Driven Seven-Segment Displays

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CH32V003F4P6 Microcontroller: Completely Eliminate Ghosting in 74HC164 Driven Seven-Segment Displays

Many developers using the serial-parallel driving CMOS integrated circuit74HC164 have reported ghosting (segments that should not be lit are slightly glowing). It is better to switch to74HC595. However, it is possible to achieve ghost-free operation using74HC164 to drive seven-segment displays with the synchronous serial port of the STM32F103 microcontroller. The STM32F103 microcontroller is limited in … Read more

Driving 7-Segment Displays with 74HC164 and 74HC138 Using Serial Communication (Part 2)

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Driving 7-Segment Displays with 74HC164 and 74HC138 Using Serial Communication (Part 2)

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

Driving 7-Segment Displays with 74HC164 and 74HC138 Using 51 Microcontroller (Part 1)

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Driving 7-Segment Displays with 74HC164 and 74HC138 Using 51 Microcontroller (Part 1)

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