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COMSATS UNIVERSITY ISLAMABAD, WAH
CAMPUS
SUBMITTED BY: -
NAMES: REGISTRATION NO:
Muhammad Abubaker Siddiq FA20-BEE- 026
Muhammad Usama Dilshad FA20-BEE- 031
Muhammad Haroon Akhtar FA20-BEE- 028
Wajahat Khan FA20-BEE- 014
SUBMITTED TO: -
MA’AM KANWAL SAEED
PROJECT PROPOSAL
- Introduction ………………………………………………………………………… TABLE OF CONTENTS: -
- 1.1 project description………………………………………………………………
- Components …………………………………………………………………………
- 2.1 74LS190 counter ………………………………………………………………
- 2.2 74LS47 BCD to 7 segment decoders…………………………………………
- 2.3 2x ultrasound sensors ………………………………………………………….
- 2.4 Logic gates ………………………………………………………………………
- 2.5 2x 7- segment displays …………………………………………………………
- 2.6 One- bit output STOP …………………………………………………………
- Working principle ……………………………………………………………………
- Descriptive model……………………………………………………………………
- Motivation…………………………………………………………………………….
- Conclusions ……………………………………………………………………………
2.2 74LS47 BCD to 7 segment decoders:
- The 74LS47 IC is designed for driving common – anode LEDs or incandescent indicators directly. It accepts a binary coded decimal as input and converts it into a pattern to drive a seven-segment for displaying digits 0 to 9.
- A BCD to Seven Segment decoder is a combinational logic device that takes a BCD decimal digit as input and creates appropriate outputs for the segments to show the decimal digit. The following table was taken from the datasheet for the CD4511 IC. This is an interactive truth table.
D C B A a b c d e f g h
2.3 2x ultrasound sensors: It is used to detect when a vehicle enters or leaves a parking lot. 2.4 Logic gates: Logic gates are basic building blocks of any digital system. Relationship between the input and the output is based on a certain logic. 2.5 2x 7-segment displays:
- We use two 7-segment displays. A seven-segment display is a type of electrical display that shows decimal numbers in seven segments. Digital clocks, electronic meters, and other electronic devices that display numerical data frequently use seven-segment displays.
- LEDs 7-segment displays are simply seven LEDs arranged in a specific pattern. Each of the seven LEDs is referred to as a segment because when illuminated, it forms part of the numerical digit that will be shown.
2.6 One-bit output STOP: It prevents more cars to enter the parking lot.
3. Working principle:
- When a car parks in a slot, the laser light ceases falling on the LDR, increasing the resistance of the LDR, and the signal to be communicated to IC ceases, signaling that the slot is not accessible for automobile parking. When there is no car parked in the slot, laser light falls on the LDR, the resistance of the LDR decreases, and a signal is sent to the IC indicating that the slot is available for parking.
- Cameras, sensors embedded in pavements, and other detecting equipment are used in digital parking. Sensors detect vacant parking spaces and relay the information to drivers, allowing them to obtain a better picture of where to park.
4. Descriptive model:
Block diagram:
5 Motivation:
A car parking system is the best way to show the understanding of core topics to represent use of circuits and logic gates in everyday lives. Car parking system is one of the systems that we use on daily basis operated on the principle of logic gates and circuits.
