Tahmid Mobashir presented on microprocessors. The presentation covered: 1) What a microprocessor is and its functions. 2) Classifications of microprocessors including RISC, CISC, and special processors. 3) Key differences between RISC and CISC processors, such as RISC having uniform instruction formats that take one clock cycle while CISC has variable instruction sizes and formats that take varying cycle times.

1. WELCOME TO MY PRESENTATION
Name: Tahmid Mobashir
ID: ******
Batch: ****
Presentation Topic

2. What is Microproccessor?
A microprocessor is a
control unit of a
microcomputer which
can perform arithmetic
and logical work and
communicate with
different devices

3. Classification of microprocessor
RISC
Processor
CISC
Processor
Special
Processor

4. RISC Processor
Power pc : 601,604,615
DEC Alpha: 210642, 211066
PA – RISC: HP 7100LC
The RISC Processor reduces the
execution time by simplifying the
computer’s instruction .

5. One clock cycle is required for each instruction
1
In RICS Processor simple instruction are consistent
2
It Supports many types of data formats
3
It Consists of large number of registers
4
It Consists of less number of transistors
5

6. CISC Processor
CISC Processor
IBM 370/168
VAX 11/780
Intel 80486
The CISC Processor is designed to
Minimize the number of instructions
For each program .

7. Varity of addressing modes
1
Large number of instruction
2
Variable Length of instruction format
3
Several cycles may be need for one instruction
4
Instruction decoding logic is complex
5

8. Processors that are designed to do
Certain things are called special
Processors.
Special Processor
Coprocessor
Input & output
Processor
DSP Transputer

9. Different between RISC & CISC
RISC Microprocessor CISC Microprocessor
Instructions of same set with few formats Multiple instruction sizes and format
Uses more resisters Less registers
Fewer addressing modes More addressing modes
Instructions take one cycle time Instructions take a varying amount of cycle time