In Microprocessor more op-codes, few bit handling 
instructions. But in Microcontroller: fewer op- codes, more 
bit handling Instructions, and also it is defined as a 
device that includes micro processor, memory, & input / 
output signal lines on a single chip.

The basic difference between the microprocessor and 
microcontroller is that we can interface a microcontroller 
directly means "for example we can directly connect a 
keyboard to microcontroller to any of its ports"....where 
as for microprocessor we can't interface directly...we 
require a circuit board since it requires 
ram,ic's.....etc.,!

In Microprocessor we have to connect external RAM, ROM,
I/o, Timers and interrupts by externally, where as in
Microcontroller RAM, ROM,I/O, Timers serial communication
all are in built in microcontroller,
Microprocessor is used in Higher end Industrial projects
where as Microcontroller can be used for lower end projects
because processor                   can  beconnected by
external memory where as in controller it is fixed memory in
some case we can add external memory also