International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 12 Issue: 04 | Apr 2025
p-ISSN: 2395-0072
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DISPLAY ON FPGA WITH 7 SEGMENT CONTROLLER J.Yasaswi1, Visranthamma 2, N. Chandana ravithreni 3, V.Lakshmaiah 4 , V.LURDHU MARREDDY5 1Student & AMRITA SAI INSTITUTE OF SCIENCE AND TECHNOLOGY
2Assistant Professor & AMRITA SAI INSTITUTE OF SCIENCE AND TECHNOLOGY 3Student & AMRITA SAI INSTITUTE OF SCIENCE AND TECHNOLOGY 4Student & AMRITA SAI INSTITUTE OF SCIENCE AND TECHNOLOGY 5Student & AMRITA SAI INSTITUTE OF SCIENCE AND TECHNOLOGY ---------------------------------------------------------------------***---------------------------------------------------------------------
Abstract -
1.INTRODUCTION
In modern digital systems, the use of FieldProgrammable Gate Arrays (FPGAs) has gained significant traction due to their reconfigurability, speed, and adaptability for diverse applications. One of the most fundamental tasks in FPGA-based systems is the implementation of displays, such as seven-segment displays. Seven-segment displays are widely used for visualizing numerical data, commonly seen in digital clocks, counters, and various consumer electronics. The design of an FPGA-based seven-segment controller offers a versatile, efficient, and customizable solution to display a wide array of numeric and alphanumeric values.
In today’s fast-paced technological world, embedded systems have become an integral part of various industries. These systems are responsible for controlling a wide range of devices and operations, from home appliances and industrial machines to automotive systems and telecommunications. Among the many types of embedded systems, digital display systems have seen widespread usage, particularly those that utilize sevensegment displays. Seven-segment displays are a simple yet powerful solution for displaying numerical and alphanumeric data, commonly seen in devices like digital clocks, counters, calculators, and other digital instruments. The utility of these displays lies in their ability to represent numerical data in an easily readable and visually appealing format, making them indispensable in both everyday applications and specialized industrial uses.
This research paper presents the design and implementation of a seven-segment display controller using FPGA technology. The proposed system involves the integration of a Binary Coded Decimal (BCD) to sevensegment converter, a slow clock generator, and a scrolling message display mechanism to create a dynamic display output. The paper demonstrates the usage of VHDL and Verilog hardware description languages to describe the modules that work together to generate the desired display output.
The technology behind controlling and driving a seven-segment display has evolved over the years, with significant advancements made in terms of flexibility, processing power, and adaptability. In recent years, FieldProgrammable Gate Arrays (FPGAs) have emerged as a popular platform for digital system design due to their reconfigurability, speed, and parallel processing capabilities. An FPGA is an integrated circuit that can be programmed to perform specific tasks, such as controlling displays, processing signals, and executing complex algorithms. Unlike traditional microcontrollers, FPGAs offer a unique advantage in handling high-speed operations, performing parallel computations, and providing customizability, making them an excellent choice for digital display applications.
The system is composed of several key components, each playing a crucial role in ensuring proper operation and functionality. The first major component is the BCD to 7-segment converter, which takes a 4-bit binary input (BCD) and converts it into the appropriate seven-segment display pattern. This conversion is essential for rendering numbers on the display. The second component is a slow clock generator that produces clock signals with slower frequencies to control the timing of the display update. The system includes both a 1 Hz slow clock and a 100 Hz slow clock, which are necessary for controlling the rate at which data is updated on the seven-segment displays. The third component is the scrolling message module, which orchestrates the sequencing of multiple numbers or characters across four different seven-segment displays.
This research paper presents the design and implementation of a seven-segment display controller using an FPGA. The system utilizes a combination of Verilog hardware description language (HDL) modules that work together to generate dynamic, real-time messages on the display. The core functionality of the system lies in the ability to control and manipulate the state of multiple seven-segment displays to visualize data, which is a fundamental task in many embedded systems applications. The key components of the system include a
Keywords : FPGA, 7 segment Controller,Clock , Frequency
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