ASPPRATECH
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This is an amazing world of ENDLESS POSSIBILITIES………depends on how innovative you
can be…..
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An Embedded System is a computer system designed for specific control functions
within a larger system, often with real-time computing constraints. It is embedded as
part of a complete device often including hardware and mechanical parts. By contrast,
a general-purpose computer, such as a personal computer (PC), is designed to be
flexible and to meet a wide range of end-user needs. Embedded systems control many
devices in common use today.
Embedded systems contain processing cores that are typically either Microcontrollers
or Digital Signal Processors (DSP).
Physically, embedded systems range from portable devices such as digital watches and
MP3 Players, to large stationary installations like traffic lights, factory controllers, or the
systems controlling nuclear power plants. Complexity varies from low, with a single
microcontroller chip, to very high with multiple units, peripherals and networks
mounted inside a large chassis or enclosure.
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Content of Embedded System
1.Introduction:
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What is Embedded System ?
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Microprocessor vs. Microcontroller
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CISC vs. RISC
2.Overview of Architecture of 8051:
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Processor Core and Functional Block Diagram
Description of memory organization
Overview of ALL SFR’s and their basic functionality
3.Low Level programming Concepts:
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Addressing Modes
Instruction Set and Assembly Language programming(ALP)
Developing, Building, and Debugging ALP’s
4.On-ChipPeripherals Study(Interfacing), Programming, and Application:
Ports: Input / Output
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Timers & Counters
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UART
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Interrupts
5.External Interfaces Study , Programming and Applications :
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LEDS
Switches
Seven Segment Display
LCD (8bit, 4bit, Busy flag, custom character generation)
Keypad Matrix
6.Selective Discussion during Project Development:
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A/D & D/A Converter
Stepper Motor, DC Motor
RF Communication
RFID
GSM
EDSIM51 Simulator
This simulator will help students learn to write programs to exercise the 8051.
Students can begin by ignoring the peripherals. In this way they can first become
accustomed to the many different move, arithmetic and branch instructions that
make up the 8051 instruction set. As the students gain experience and confidence
they can then write code to scan a keypad, or count the motor's revolutions, or
multiplex 7-segment displays, etc.
Some of the peripherals share the same port pins. For example, the 7-segment
displays' data lines and the DAC are connected to port 1. This means that, if the
student wishes to use the display and the DAC together, he/she must learn how to
disable one to access the other. The top left box gives the user access to all the
8051's registers, data memory and code memory.
In the centre is a textbox where the user either loads an assembly program (from the
local disk) or writes the code directly.
On the right is a list of the 32 port pins and what each one is connected to. The
current value of the port pin is displayed here.
The bottom panel shows all the peripherals that are connected to the 8051.
On Board Microcontroller Programming:
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“Real Time Interfacing Board for 8051” has on
board interfaces circuits for:
1. 16x2 LCD
2. Seven Segment displays – 4
3. DS1307 Real Time Clock
4. LEDs
5. Buzzer
6. LM35 Temperature Sensor
7. Eight Bit Analog to Digital Converter (ADC)
8. RS232 Serial port, which is used as programmer for
89C51