I need some help regarding Intel 8051A microcontroler.I need to control 2 Dc motors with a joystick , which are mounted in chasis of a 3 wheeled frame.
I would be grateful if anybody can help me in starting up with this microcontroler for making the remote control for controling these motors.

I can help you with PIC microcontrollers ...
8051 is history ..why are you still holding on it.??

Pic can do but as i know its complicated to use....

Why are you working with 8051 controller. its old .

Use L293D ic to control the motors.

Motor Drivers are circuits which allow control of your motors. You need them because you can't power a motor with just a micro-controller's supply. Motor Drivers are available in IC form, implemented in the form of an "H-Bridge". They allow you to switch on and off a motor using an output from a micro-controller, and the best feature is they allow you to run the motor in both forward and reverse...!

To better understand H-Bridge follow the below link:

http://en.wikipedia.org/wiki/H_bridge

http://www.mcmanis.com/chuck/robotics/tutorial/h-bridge/index.html

Motor Drivers get extremely hot sometimes, and proper dissipation is necessary. Another important factor many overlook is the maximum current the motor driver IC allows to pass through it. It should be high if we need more current to drive our motors. This physical limitation of the IC can also result in the slow movement of your bot. Remember to allow for ample current in your motors, and select a module/IC which has a motor driver capable of handling that current!

A commonly used IC is L293D (As suggested by lastrites  ), which allows for 500mA of current for each motor. The better option in my opinion would be its bigger brother the L293DNE, which allows double the current for each motor than the former.

Hope it helps...! 

thnq adiboy
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There a enough brilliant engineers in India who can design all the stuff related to rc and yet we have to import things from abroad!!
Take an example of ESC ..its nothing rocket science and yet most of these are sold for over $50!! Mosfets are as cheap as 10 Rs that are used in these.

When will engineers from specialized fields  take a step to change what they can and not be dependent?

India is not even manufacturing mass scale IC`s and what ever companies as setting up base here have foreign technology and they manufacture for foreigners.

One needs to have VIGOR in oneself with a burning desire and anger to fight back!! All this easy life of today has wiped out the fight in people.