Design and construction of an electronic dice display with audio unit
Table Of Contents
- FIG
- 1.0 and gate diagram Fig
- 1.1 capacitor diagram Fig
- 1.2 seven segment diagram Fig
- 3.01 block schematic diagram of an electronic dice display Fig
- 3.02 block schematic diagram of an audio unit Fig
- 3.03 555 timer schematic circuit diagram Fig
- 3.04 555 timer block diagram Fig
- 3.05 555 timer configuration Fig
- 3.06 pin-out connection of a 555 timer Fig 3.07a 555 timers in astable mode Fig 3.07b timing diagram Fig
- 3.08 Jk flip flop symbol Fig
- 3.09 delay flip-flop from Jk flip-flop Fig 3.10a delay flip-flop from JK flip-flop Fig 3.10b D flip-flop timing diagram Fig
- 3.11 D type flip-flop in TTL Fig
- 3.12 Quad-and gate symbol Fig 3.13a Circuit block diagram of a digital counter Fig 3.13b Output wave forms Fig 3.14a circuit block diagram of mod 10 counter Fig 3.14b output wave forms Fig
- 3.15 Mod 6 counter using decade counter Fig
- 3.16 functional logic diagram of BCD to decimal decoder Fig
- 3.17 seven segment display layout arrangement Fig
- 3.18 seven segment display connections Fig
- 3.19 BCD to seven segment block diagram Fig
- 3.20 7447 BCD to seven segment decoder driver functional Fig
- 4.01 top view of 7414 Fig
- 4.02 counter configuration for the 7490A Fig
- 4.03 top view of 7474 Fig
- 4.04 top view of SN 7447 Fig
- 4.05 top view of common unode display Fig
- 5.01 output wave of 555 timers Table
- 3.1time table for sK flip-flop Table
- 3.2delay flip-flop forms flip-flop Table
- 3.4and logic gate truth table Table
- 3.5table of counter output in various forms. Table
- 3.7bid to seven segment decoder truth table Table 4.1a BCD count sequence Table
- 5.0procedure chart Table
- 5.1system flowchart Table
- 6.0program design Table
- 6.1program flowchart Title page ii Approval page iii Dedication iv Acknowledgement v Abstract vi Organization of work viii List of figures x List of table xii Table of content xiiiCHAPTER ONE INTRODUCTION 1
- 1.0 Statement of problem 1
- 1.1 purpose of study 2
- 1.2 Aims and objectives 2
- 1.3 Scope 3
- 1.4 Limitations 3
- 1.5 Definitions of terms 5CHAPTER TWO Literature Review 9CHAPTER THREE Description and Analysis of the Existing System 15 Organization structure 16 Objectives of the existing system 17CHAPTER FOUR Design of the New System 18 Output specification and design 20 Input specification and design 29 File design 38 Procedure chart 39 System flow chart 41 System requirement 42CHAPTER FIVE Implementation 47 Program flowchart 49CHAPTER SIX Documentation 51CHAPTER SEVEN Recommendation and Conclusion 53
- 7.1 Recommendation 53
- 7.2 Conclusion 53 Reference 55
Thesis Abstract
This work deals extensively with the design and construction of an electronic dice display (EOD) with audio unit. The device displays the of a ludo dice in numerical form and also produces sound as it displays the number.
The device works with principle of chance employee by ludo game players. The output of the display is usually very rapid that the player does actually sex the number when the device is switched on so that it will purely be a game of chance. When the off key is pressed, a patellar number is displayed and this number is the number, the player got.
The operation of the device starts by the generation of a pulse frequency. The pulse frequency (square wave signal) generated by times (555 times) by connecting in an instable multibibrator. The output from this timer is used in clocking the binary counter (mod to counter) but this counter is biased to count just from zero through six (0-6) as we have in a lodo game dice. To achieve this bias in the mod 10 counter, the output from Qo, Q1 and Q2 were connected to the reset pins so that once the counter finishes the count of six or goes back to zero.
The result from the binary counter is then fed to the decoder driver before connecting it to seven segment so that the decoder will be able to covert the binary values to the decimal values that are being used in the ludo game dice. The seven segment then displays the numbers by lighting the diodes that make up that particular value.
This device is being regulated by a latch (4-edge triggered flip-flop) which has two switches, one is used for putting the power supply and the other two push switches for the working of the dice display.
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