A PRESENTATION ON EMBEDDED SYSTEM PRESENTED TO: PRESENTED BY: Mr. MAHESH KUMAR MEHRA ROSHAN MANI (Assistant Professor) (11ECTEC047) DEPARTMENT OF ELECTRONICS & COMMUNICATION ENGINEERING GOVT. COLLEGE OF ENGINEERING & TECHNOLOGY, BIKANER 26/06/2022 Roshan Mani 1
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
SEVEN SEGMENT DISPLAY The seven elements of the display can
be lit in different combinations to represent the Arabic numerals.
In a simple LED package, typically all of the cathodes (negative terminals) or all of the anodes (positive terminals) of the segment LEDs are connected and brought out to a common pin; this is referred to as a "common cathode" or "common anode" device.
10/04/2023Roshan Mani
10/04/2023Roshan Mani 12
SEGMENT IDENTIFICATION A Seven-Segment Display (SSD) is simply a figure
eight grouping of LEDs { include a decimal point (DP)}. Each Segment is labeled (a) to (g). SSDs are available in two configurations
Common Cathode (all LED cathodes are connected) Common Anode (all LED anodes are connected)
a
b
c
d
e
g
dp
f
13
INTERFACING OF SEVEN SEGMENT DISPLAY
10/04/2023Roshan Mani
14
LIQUID CRYSTAL DISPLAY A liquid crystal display (LCD) is a flat panel
display, electronic visual display, or video display that uses the light modulating properties of liquid crystals. Liquid crystals do not emit light directly.
Each pixel of an LCD typically consists of a layer of molecules aligned between two transparent electrodes, and two polarizing filters, the axes of transmission of which are (in most of the cases) perpendicular to each other.
10/04/2023Roshan Mani
10/04/2023Roshan Mani 15
INTERFACING OF LCD WITH 8051
10/04/2023Roshan Mani 16
APPLICATIONS IN INDUSTRY
Telecom Automotive applications Domestic applications Robotics Aerospace applications Medical equipment Defense systems
10/04/2023Roshan Mani 17
PROJECT OVERVIEWBI-DIRECTIONAL VISITOR COUNTER & HOME AUTOMATION
The objective of this project is to make a Microcontroller based model to count number of persons visiting particular room and accordingly light up the room.
10/04/2023Roshan Mani 18
TRANSMITTER & RECEIVER CIRCUIT
10/04/2023Roshan Mani 19
BDVC MAIN PART
10/04/2023Roshan Mani 20
WORKING PICTURE
10/04/2023Roshan Mani 21
APPLICATIONS:
1. This circuit can be used domestically to get an indication of number of persons entering a party.
2. It can be used at official meetings.
3. It can be used at homes and other places to keep a check on the number of persons entering a secured
place.
4. It can also be used as home automation system to ensure energy saving by switching on the loads and fans only when needed.