WIZTECH –BEST EMBEDDED SYSTEM TRAINING INSTITUTE IN CHENNAI
                     WIZTECH –BEST EMBEDDED
SYSTEM COURSE TRAINING 
INSTITUTE IN CHENNAI
EMBEDDED C & EMBEDDED SYSTEM
http://www.embeddedtraining.co.in  
INTRODUCTION OF EMBEDDED 
SYSTEM 
 A combination of software and hardware which is combined together to 
perform specific task.
 An example of an embedded system is a microprocessor which controls 
an automobile engine. 
 An embedded system is designed to run on its own without human 
intervention, and may be required to respond to events in real time.
Microprocessors and 
Microcontrollers
 The microprocessor is a processor on one
 silicon chip.
 The microcontrollers are used in embedded
 computing.
 The microcontroller is a microprocessor with
 added circuitry.
APPLICATION OF EMBEDDED SYSTEM
 Consumer Electronics : Camcorders, Cameras, etc… 
  Household Appliances : Television, DVD Player, Washing machine, 
fridge, microwave oven, etc. 
  Home automation and security system : Air conditioners, Sprinkler, 
intruder detection alarms, fire alarms, closed circuit television cameras, 
etc 
  Automotive industry : Anti-lock breaking system (ABS), engine control, 
ignition control, automatic navigation system, etc.. 
APPLICATION OF EMBEDDED 
SYSTEMS
 Computer peripherals : Printers, scanners, fax machines, etc… 
  Computer Networking systems: Network routers, switches, hubs, 
firewalls, etc… 
  Health care : CT scanner, ECG , EEG , EMG ,MRI, Glucose monitor, 
blood pressure monitor, medical diagnostic device, etc.
  Measurement & Instrumentation: Digital multi meters, digital CROs, 
logic analyzers PLC systems, etc… 
  Banking& Retail: Automatic Teller Machine (ATM) and Currency 
counters, smart vendor machine, cash register ,Share market, etc..
NEEDS OF AN EMBEDDED SYSTEM
 Each Embedded system is designed to serve the purpose of any one or a 
combination of the following tasks. 
 1. Data collection/Storage/Representation 
 2. Data communication 
 3. Data (Signal) processing 
 4. Monitoring 
 5. Control 
 6. Application specific user interface
EMBEDDED DATA 
COMMUNICATION
 Embedded data communication 
systems are developed in 
applications ranging from 
complex satellite communication 
systems to simple home 
networking systems. 
EMBEDDED SYSTEM CONTROL
 Embedded system with control functionalities impose 
control over some variables according to the input 
variables. 
 A system with control functionality contains both 
sensors and actuators. 
 Sensors are inputs ports for capturing the changes in 
environment variables or measuring variable. 
 Actuators are output ports are controlled according to 
the changes in input variable. 
GENERAL PURPOSE PROCESSORS
 Programmable device used in a variety of applications – Also known as 
―microprocessor‖
  Features – Program memory – General datapath with large register file 
and general ALU 
  User benefits – Low time-to-market and NRE costs – High flexibility 
―Pentium‖ the most well-known, but there are hundreds of others IR PC 
Register file General ALU Controller Datapath Program memory 
Assembly code for: total = 0 for i =1 to … Control logic and State 
register Data memory
EMBEDDED SYSTEM ESSENTIALS
 INSTRUCTION SETS
 CISC: Complex Instruction Set Computer
 RISC: Reduced Instruction Set Computer
MEMORY TYPES
 Volatile: Random Access Memory (RAM)
 Non-volatile: Read Only Memory (ROM)
SUMMARY
 An embedded system is a product that has one or 
more computers
 embedded within it, which exercise primarily a control 
function.
 The embedded computer is usually a microcontroller: 
a microprocessor
 adapted for embedded control applications.
 Microcontrollers are designed according to accepted 
electronic and
 computer principles, and are fundamentally made up 
of microprocessor
 core, memory and peripherals.
SUMMARY
 Microchip offers a wide range of microcontrollers, divided into a number
 of different families. Each family has identical central architecture and
 instruction set. However, common features also appear across all their
 microcontrollers.
 The Microchip 12F508 is a good microcontroller to introduce a range of
 features of microcontrollers in general and of PIC microcontrollers in
 particular.
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