Hi Preethi,

Your questions are very very non-specific please try to be more specific about the application you are looking for Explain yes clearly what you have done so far and what specific trouble you have we will certainly help you out. As far as your questions are concerned here are the answers.

thanx 4 ur response sir
but i want to know which microcontroller to be used.

There are several microcontroller families with more than several thousand derivatives in each family the microcontroller to be chosen depends upon following factors.

1. processing power needed and the width of data to be processed.
-If most of the data's you need to process are 8 bit wide you can go for a 8 bit microcontroller such as 8051, AVR, PIC family etc. Having said that doesn't mean these 8 bit micros are not capable of processing data wider than 8 bit certainly they can handle larger data processing but speed is slowed down when doing so. If you are looking for a 16 bit micro you can think of using MCS96 MCS196 80188 80186 processor families. If your intrest is in 32 bit processor check out for ARM series, Motorola ColdFire, Motorola DragtonBall etc.

Since this forum is a 8052 forum I will concentrate on 8051 family of micrcontrollers. It is a 8 bit micro family manufactured by several semiconductor companies such as Philips, Atmel, Si Labs etc. there are more than several thousand spiecies in this family. There are several families based on execution speed as well for example Philips has 12 cycle micros, 6 cycle micros, 2 cyle micros DALLAS has single cycle micros as a rule of thumb lesser the cylces needed more is the MIPS achieved. Select an appropriate micro based on power you need

2. Additional Features such as RTC, PWM, ADC, DAC, PCA, Comparators, Motor controls etc needed embedded in the chip. If you are looking for some specific application segment and want some specific feature than choose a micro that has the required features in built this saves the cost on components and saves board space.

3. Package -> Ofcourse size is a mojour factor in some application choose a smaller pin derivative if you have restrictions on space utilization.

4. Cost-> Hmmm... cost in some designs the most critical factor choose a micro that justifies the cost as well.


2.the microcontroller must have inbuilt adc.
Ok, so you want a micro with built in ADC. Check out the philips LPC series tiny micros feature packed most have them have ADC's built in. Analog devices have several 8051 micros with ADC's such as ADuc812. Hope this will ease the micro selection problem. http://www.keil.com/dd/parm_search.asp yes the great keil Device database.

then regarding c#. actually we r instrumentation enggs. our project has got selected in microsoft.net contest.

C# ok tell me what part has to be implemented in C# the micro firmware or a PC software that interacts with your micro. If you are thinking of using C# to program your micro source code just forget it no tool supports this.

then for our 1st review we need to provide details about mu.c. we have doubt between mu.c based system and rtos embedded systems.

Whats that mu.c !!! is it a C language source file you have created or do you mean microcontroller.

Regards,
Prahlad Purohit