Microprocessors

What are Microprocessors? And how is it different from a Microcontroller.

Ans:. 

I have heard many people using these terms interchangeably but they are not the same.

Let me explain how.
Microcontroller is a system on chip device, i.e. the processing unit, the I/O as well as the memory, all are one unit. Because it need not occupy a lot of space, as the number of functions it can provide are only a handful. Example, The A/c remote or a microwave or a washing machine, they have limited functionality. We cant fit big processors inside these machines/devices. The processor that you see in your PC cant be fitted into a tiny remote and the remote doesn't need such high level processing at all.

This is where microcontroller comes into picture.
When we talk of microcontrollers like 8051, 8052 or ARM 7 based controllers, we look at their specifications and think that it has such limited storage and RAM. But when we look at the applications we understand it is more than sufficient.

So in summary,

Microcontroller is a compressed micro computer manufactured to control the functions of embedded systems in office machines, robots, home appliances, motor vehicles, and a number of other gadgets. 

And a Microprocessor, Microprocessor is the heart of Computer system.
Other components are separate, the I/O and the memory are all external to the main Processing Unit. You can’t use it in compact systems. It’s used for general purpose applications that allow you to handle loads of data.

Where are Microprocessors used?

Complex industrial controllers, Computational Systems, Traffic light, Military applications, etc.

Where are Microcontrollers used?

Washing machines, Microwave oven, Mobile phones, Automobiles, Security alarms, etc.

Types of Microprocessors:

ASIC (Application Specific IC)

CISC (Complex Instruction Set Computer)

RISC (Reduced Instruction Set Computer)

DSP (Digital Signal Processors)