Registers are small data holding places within a computer's processor. There are several types of registers that each serve a specific purpose. The Memory Buffer Register receives data from memory or I/O devices. The Memory Address Register specifies the memory address. The Instruction Register contains the opcode of the instruction being executed. The Program Counter holds the address of the next instruction. The Accumulator is used to hold temporary operands and results of arithmetic logic unit operations. Registers are important parts of the CPU that provide fast storage and allow the processor to quickly access data during operations.

1. Welcome to my presentation
Jubel ahmed
ID : 162-35-1648

2. Registers

3. What is register? A register is one of a small set of data
holding places that are part of a
computer processor .
A register may hold :
❖ A computer instruction
❖ A storage address
❖ Or any kind of data (such as a bit
sequence or individual
characters)

4. Types of registers I. Memory Buffer Register (MBR) :
A. Used to receive a word from main
memory or i/o device
II. Memory Address Register (MAR) :
A. Specifies the address in memory
III. Instruction Register (IR) :
A. Contains 8 bit opcode instruction being
executed.
IV. Program Counter (PC) :
A. Holds the address of the next
instruction
V. Accumulator (AC) :
A. Processor register , it holds temporary
operands and results of ALU operation.

5. 1PC
MAR
MDR
AC
1
LOAD 5
10
1. LOAD 5
2. ADD 6
3. STO 7
4.
5. 10
6. 15
7. 25
8.
ADDRESS BUS
DATA BUS
5
10
2
2
ADD 6
25
6
15
3
3
STO 7
7
25
Fetch-execute cycle and role of registers
CPU
Memory

6. ❖ This register is a most important part of CPU.
❖ Processor register is fast storage device.
❖ A processor register is a quickly accessible location available to
a computer's central processing unit (CPU).
Conclusion :

7. ❖ https://www.slideshare.net/taimoorashraf750/register-47676992
❖ https://www.youtube.com/watch?v=04UGopESS6A
❖ https://en.wikipedia.org/wiki/Processor_register
Reference :

8. ANY QUESTIONS?