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Design of display-driving circuit for large-size LED based on MAX7219

Shaobo Fu

Open publisher page 1 citations

Abstract

The existing display-driving circuit based on MAX7219 was only applicable to small-size LED.To expand its use,based on the function introduction of dynamic display chip MAX7219,a display-driving circuit for high-brightness 8-bit LED with the size of 8-inch was proposed.The advantages of MAX7219 were retained,such as powerful function and simple programming.Static display with adjustable brightness for large-size LED with higher voltage and current was achieved with the help of 74LS273 and ULN2803.

About this research paper

What this paper is about

The existing display-driving circuit based on MAX7219 was only applicable to small-size LED.To expand its use,based on the function introduction of dynamic display chip MAX7219,a display-driving circuit for high-brightness 8-bit LED with the size of 8-inch was proposed.The advantages of MAX7219 were retained,such as powerful function and simple programming.Static display with adjustable brightness for large-size LED with higher voltage and current was achieved with the help of 74LS273 and ULN2803.

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Available abstract

The existing display-driving circuit based on MAX7219 was only applicable to small-size LED.To expand its use,based on the function introduction of dynamic display chip MAX7219,a display-driving circuit for high-brightness 8-bit LED with the size of 8-inch was proposed.The advantages of MAX7219 were retained,such as powerful function and simple programming.Static display with adjustable brightness for large-size LED with higher voltage and current was achieved with the help of 74LS273 and ULN2803.

Key concepts: LED display, Brightness, Display size, Driver circuit, Display device, Computer science, Voltage, Chip

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