Embedded System

System is a Device which Performs a specific Operation

• Embedded is a Combination of Hardware/Software to perform a specific operation on a specific Task.
• Software is a Collection of Program
• Computer system performs multiple operations
• Compare to Computer/Systems Embedded Performs single operation in specific operations

Embedded System:

Examples for Embedded are:

1. Automatic Washing Machine

2. Digital Camera etc.,.

Real Time System:

A Specific operation is completed in a specific time period is known as Real Time System. They are of 2 types:

1. Soft Real Time System

2. Hard Real Time System

Soft Real Time System: If operation doesn't complete in a specific time it will extend the time to complete operation.

Hard Real Time System: If the operation doesn't complete in a specific time period then it will faces a number of problems, then manually we need operate.

Software	Hardware
We use Keil Compiler In Keil Compiler we use programming languages viz., C, assembly language & Java.	we have two types 1.Optional Hardware (DTMF/I2C/Combus) 2. Mandatory Hardware (Microcontroller/LED/LCD/Switches/Buzzer/Sensor/Motors, etc.,)

• C programming is an High Level Language
• Assembly language is a Low Level Language/Machine Language/Commands.
• Security is the main Drawback in C Programming, to overcome this drawback we use C++,Java.

Embedded System divided into following:

Embedded system

       (1)                                                           (2)                                                            (3)

Single Scale                                                Medium Scale                                                   Large Scale

(8Bit/16Bit)                                                     (16/32Bit)                                                       (32/64Bit)

  

** In this Real Time                                  Mostly we use 16 Bit                                 Mostly 64Bit is Used 

              System (RTS) is an

               Optional                                                                         These two are Mandatory

                     &                                                          

          ** In this We use 

        C and C++ Programming.

**PIC - Peripheral Interface Connector (32 Bit)
**ARM (Advanced RISC Machine) 64bit Mostly used in Large Scale.

Design Parameters of Embedded System:

- Performance
- Size
- Cost
- RTS (Real Time System)
- Speed