This work is on building a BCD to 7 segment display decoder circuit using the 4511 chip. A BCD to 7 segment decoder circuit is a circuit that intakes a binary value and displays the equivalent decimal value on the 7 segment display.
The 4511 BCD to 7 segment display decoder works is it has 4 pins that intake a binary value. Each of these 4 pins can hold a 0 (LOW) or a 1 (HIGH). With the binary value input, the equivalent decimal value of that binary number is displayed on the 7 segment display. Otherwise, you would have to know which pins on the 7 segment display to turn on or off, making it much more complicated. This chip saves us a lot of work for that reason.
In this work, we will start the 4511 BCD to 7 segment display decoder with the most basic circuit. We will connect this chip by itself to pushbuttons. Using the pushbuttons, you can manually see how depending on which pushbuttons we press, how the output changes in response. So we can see which combinations of pushbuttons turned on displays which decimal values.

 

TABLE OF CONTENTS
COVER PAGE
TITLE PAGE
APPROVAL PAGE
DEDICATION
ACKNOWELDGEMENT
ABSTRACT
CHAPTER ONE
INTRODUCTION
1.1      BACKGROUND OF THE PROJECT

1. OBJECTIVE OF THE PROJECT
2. SCOPE OF THE PROJECT
3. LIMITATION OF THE PROJECT
4. APPLICATION OF THE PROJECT

CHAPTER TWO
LITERATURE REVIEW

1. OVERVIEW OF BINARY-CODED DECIMAL
2. BASICS OF BCD
3. BCD IN ELECTRONICS
4. DESCRIPTION OF MAJOR COMPONENTS USED
5. HOW TO DISPLAY NUMBERS ON 7 SEGMENT DISPLAY USING BINARY CODE

CHAPTER THREE
METHODOLOGY

1. SYSTEM BLOCK DESCRIPTION
2. SYSTEM CIRCUIT DIAGRAM
3. COMPONENTS REQUIRED
4. SYSTEM OPERATION
5. CIRCUIT DESCRIPTION AND OPERATION
6. POWER SUPPLY UNIT

CHAPTER FOUR
RESULT AND TEST ANALYSIS

1. CONSTRUCTION PROCEDURE AND TESTING ANALYSIS
2. CASING AND PACKAGING
3. ASSEMBLING OF SECTIONS
4. TESTING OF SYSTEM OPERATION
5. INSTALLATION OF THE COMPLETED DESIGN
6. COST ESTIMATION

CHAPTER FIVE

1. CONCLUSION
2. RECOMMENDATION
3. REFERENCES

  

CHAPTER ONE
1.1                                                        INTRODUCTION
Most often seven-segment displays are used to display the digits in digital watches, calculators, clocks, measuring instruments and digital counters, etc. Generally, LCD and LED segments provide the display output of numerical numbers and characters
However to display the characters and numbers (in order to produce the decimal readout), seven-segment displays are most commonly used. Mostly these displays are driven by the output stages of digital ICs (to which the visual indication of the output stages has to be performed) such as latches and decade counters, etc.
But these outputs are in the form of 4-bit binary coded decimal (BCD), and not suitable for directly driving the seven-segment displays.
A display decoder is used to convert a BCD or a binary code into a 7 segment code. It generally has 4 input lines and 7 output lines. Here we design a simple display decoder circuit using logic gates.
Even though commercial BCD to 7 segment decoders are available, designing a display decoder using logic gates may prove to be beneficial from economical as well as knowledge point of view.

1.2                                             OBJECTIVE OF THE PROJECT
Main objective of this work is to drive 7-segment display with IC 4511. This CD4511 ICis basically a BCD to 7-Segment decoder/driver IC, using which you can convert a binary number into a decimal number on the 7-segment display.

1.3                                         APPLICATIONS OF THE PROJECT

1. This circuit can be modified using timers and counters to display the number of clock pulses.
2. This circuit can be modified to develop an alphabet display system instead of a decimal number display system.
3. It can be used as a timer circuit.

1.4                                          LIMITATIONS OF THE PROJECT

1. This circuit involves lot of logic gates and is quite complex.
2. Timing delay by each logic gate is a matter of concern and this circuit might not produce accurate results when used to display count of pulses.
3. This is a theoretical circuit and may require few modifications.

1.5                                                 SCOPE OF THE PROJECT
There are so many means of driving seven segment display using different ICs. In this work we are going to drive 7-segment display with IC 4511. This CD4511 ICis basically a BCD to 7-Segment decoder/driver IC, using which you can convert a binary number into a decimal number on the 7-segment display. For example, for printing number “2” on 7-segment display we will give 0010 to the inputs (A,B,C,D) of IC4511, likewise we can print 0-9 decimal number on single 7-segment display. We can be able to display a decimal number without using this chipset, but then we need 3 more pins and circuit will be complex, for saving pin we are using this IC.

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