The document provides a history of Intel microprocessors from their first 4-bit microprocessor, the 4004 introduced in 1971, through early 8-bit and 16-bit processors like the 8008, 8080, and 8086, and describes the introduction of 32-bit processors like the 80386 and 64-bit processors such as the Pentium, Core i3, i5, and i7. It details key specifications and improvements in each generation such as increased clock speeds, expanded bus widths and memory capacity, and growing transistor counts, charting Intel's progression toward more powerful multi-core 64-bit processors.

1. History Of INTEL
Microprocessor
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2. 4 Bit Microprocessors
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3. Intel 4004
• 1st microprocessor
• Clock-rate -- 749KHz
• Bus-width -- 4bits (multiplexed
address and data due to limited
pins)
• 2300 transistors used
• Program memory –4KB
• 16 pins
3

4. Intel 4040
• Introduced in 1974
• Clock Speed - 740KHz
• 3000 transistors used
• Interrupt feature was introduced
• Program memory—8KB
• 24 pins
4

5. 8 bits processors
5

6. Intel 8008
• Introduced on 1 april 1972
• Clock rate—500KHz
• Bus width –8bits
• 3500 transistors used
• Addressable memory—16KB
6

7. Intel 8080
• Introduced April 1, 1974
• Clock rate 2 MHz
• Data bus width: 8 bits
• address bus: 16 bits
• 4,500 transistors
• Up to 10× the performance of
the 8008
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8. Intel 8085
• Introduced March 1976
• Clock rate 3 MHz
• Data bus width: 8 bits
• address bus: 16 bits
• 6,500 transistors
8

9. 16 Bits Processors
9

10. MCS-86 family
• Introduced June 8, 1978
• Clock rate—5MHz/8MHz/10MHz
• Data bus width: 16 bits
• Address bus: 20 bits
• Up to 10× the performance of
8080
10

11. Intel 8088
• Introduced June 1, 1979
• Clock rates—4.77MHz/8MHz
• 16-bit internal architecture
• External data bus width: 8 bits,
address bus: 20 bits
• 29,000 transistors
11

12. Intel 80186
• Introduced 1982
• Clock rate-6MHz
• 55000 transistors
• Included DMA and interrupt
controller
• Address calculation and shift
operations are faster than 8086
12

13. Intel 80286
• Introduced February 2, 1982
• A version of the 80186 with an
8-bit external data bus
• Clock rates –6MHz/8MHz/
12.5MHz/16MHz/20MHz/25MH
z
• Data bus width: 16 bits, address
bus: 24 bits
• 134,000 transistors
13

14. 32 bits microprocessors
14

15. Intel iAPX 432
• Introduced January 1, 1981
• Multi-chip CPU
• Clock rates:5 MHz/7 MHz/8 MHz
15

16. Intel 80386DX
• Introduced October 17, 1985
• Clock rates—16MHz/20MHz
/25MHz/33MHz
• Data bus width: 32 bits, address
bus: 32 bits
• 275,000 transistors
• Used in desktop computing
16

17. Intel Pentium
• Bus width: 64 bits
• System bus clock rate 60 or
66 MHz
• Address bus: 32 bits
• Addressable memory 4 GB
• Virtual Memory 64 TB
• 8 KB of data cache
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18. Intel Pentium with MMX technology
• Introduced January 8, 1997
• 16 KB L1 instruction cache
• 16 KB data cache
• 4.5 million transistors
• System bus clock rate 66 MHz
18

19. Intel 64 bits microprocessor
19

20. Intel Core i3(1st Generation)
• 2 physical cores/4 threads
• 32+32 KB L1 cache
• 256 KB L2 cache
• 4 MB L3 cache
• Introduced on January 7, 2010
• Socket 1156 LGA
• 2-channel DDR3
• Integrated HD GPU
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21. Intel core i5 (1st generation)
• 4 physical cores/4 threads
• 32+32 KB L1 cache
• 256 KB L2 cache
• 8 MB L3 cache
• Introduced September 8, 2009
• 2-channel DDR3
• 2 physical cores/4 threads
• 32+32 KB L1 cache
• 256 KB L2 cache
• 4 MB L3 cache
21

22. Core i7 (1st generation)
• 4 physical cores/8 threads
• 256 KB L2 cache
• 8 MB L3 cache
• 781 million transistors
• Intel Turbo Boost Technology
22

23. Thank You
References-
https://en.wikipedia.org/wiki/List_of_Intel_processors#The_4-
bit_processors
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