Presentation on embedded system
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Transcript of Presentation on embedded system
10/04/2023Roshan Mani 1
A PRESENTATION
ONEMBEDDED SYSTEM
PRESENTED TO: PRESENTED BY:Mr. MAHESH KUMAR MEHRA ROSHAN MANI (Assistant Professor) (11ECTEC047)
DEPARTMENT OF ELECTRONICS & COMMUNICATION ENGINEERINGGOVT. COLLEGE OF ENGINEERING & TECHNOLOGY, BIKANER
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What Are Embedded Systems?
“Special purpose system which are either used as standalone or part of a big system”
An Embedded System is one that has computer hardware with software embedded in it as one of its important components.
An embedded product uses a microprocessor (or microcontroller) to do one task only.
Embedded basically reflects the facts that they are an integral part of the system.
An embedded system is designed to run on its own without human intervention, and may be required to respond to events in real time.
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Household appliances
Integrated systems in aircrafts and missiles
Cellular telephones
Electric and Electronic Motor controllers
Engine controllers in automobiles
Calculators
Medical Equipments
Videogames
Digital musical instruments
WHERE ARE THEY PRESENT ?
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THE NECESSARY TOOLS FOR A MICROPROCESSOR/MICROCONTROLLER
CPU: Central Processing Unit
I/O: Input /Output
Bus: Address bus & Data bus
Memory: RAM & ROM
Timer
Interrupt
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MICROPROCESSOR SYSTEM CONTRASTED WITH MICROCONTROLLER SYSTEM
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MICROPROCESSOR VS. MICROCONTROLLER
Microcontroller
CPU, RAM, ROM, I/O and timer are all on a single chip
Fix amount of on-chip ROM, RAM, I/O ports
For applications in which cost, power and space are critical
Not Expensive
Single-purpose
Microprocessor CPU is stand-alone, RAM,
ROM, I/O, timer are separate
Designer can decide the amount of ROM, RAM and I/O ports
Expensive
Versatility
General-purpose
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MICROCONTROLLER ARCHITECTURE
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MEMORY ADDRESSING & TYPES RAM ROM PROM EPROM EEPROM FLASH MEMORY
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8051 PIN descriptionP1.0
P1.1
P1.2
P1.3
P1.4
P1.5
P1.6
P1.7
RST
(RXD) P3.0
(TXD) P3.1
(INT0) P3.2(INT1) P3.3
(T0) P3.4
(T1) P3.5
(WR) P3.6
(RD) P3.7
XTAL2
XTAL1
GND
P2.7 (A15)
P2.6 (A14)
P2.5 (A13)
P2.4 (A12)
P2.3 (A11)
P2.2 (A10)
P2.1 (A9)
P2.0 (A8)
PSEN
ALE/PROG
EA/VPP
P0.7 (AD7)
P0.6 (AD6)
P0.5 (AD5)
P0.4 (AD4)
P0.3 (AD3)
P0.2 (AD2)
P0.1 (AD1)
P0.0 (AD0)
Vcc
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2
1
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2627
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8051
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LIGHT EMITTING DIODE
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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
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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
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INTERFACING OF SEVEN SEGMENT DISPLAY
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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.
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INTERFACING OF LCD WITH 8051
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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.
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TRANSMITTER & RECEIVER CIRCUIT
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BDVC MAIN PART
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WORKING PICTURE
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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.
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THANK YOU
10/04/2023Roshan Mani