Evolution of Microprocessor

Evolution of Microprocessor Fairchild Semiconductor (founded in 1957) invented the first IC in 1959. In 1968,Robert Noyce,Gorden Moore, Andrew grave resigned from Fairchild semiconductor They founded their own company INTEL . INTEL grown from three man start up in1968 to industrial grant by 1981 It had 20,000 employees & $ 188 million revenue.

INTEL 4004: INTEL 4004 It is the first microprocessor of INTEL. It was introduced in 1971. it was a 4 bit microprocessor.

INTEL 4040: INTEL 4040 It was also 4 bit microprocessor. It was introduced in 1974

INTEL 8080: INTEL 8080 It was first 8 bit microprocessor. it was introduced in 1971. It could execute 50,000 instruction per second.

INTEL 8080: INTEL 8080 Introduced in 1973. It was also 8 bit microprocessor. It was 10 times faster than 8008. it execute 5,00,000 instruction per second.

Intel 8085 : Intel 8085 It was also 8 bit microprocessor It was introduced in 1977. It could execute access 64 KB of memory . It had 256 instruction. Over 100 million copies were sold.

INTEL 8086 : INTEL 8086 Introduced in 1978. It was first 16 bit microprocessor. It could execute 2.5 million intruction per second. It could access 1 MB of memory. It had 22,000 instruction. It had multiply and divide instruction.

INTEL 8088: INTEL 8088 Introduced in 1979. It was also 16 bit microprocessor. It could execute 2.5 million instruction per second. It could acess 1 MB of memory. It had multiply and divide instruction.

INTEL 80186 & 80188: INTEL 80186 & 80188 They were 16 bit microprocessor. Introduced in 1982 . They had additional components like:- Interrupt controller Clock generator Local bus controller counters

INTEL 802866: INTEL 802866 Introduced in 1982. It was 16 bit microprocessor. It could execute 4 million instructions per second. Its clock speed was 8 MHz

INTEL 80386: INTEL 80386 Introduced in 1986. It was first 32 bit microprocessor. It could address 4 GB of memory Different versions 80386 SX 80386 SL / 80386 SLC 80386 EX

INTEL 80486: INTEL 80486 It introduced in 1989. It was also 32 bit microprocessor. It had 1.2 million transistors. Cache memory was introduced. In other microprocessor there is no cache memory introduced and this the first.

INTEL PENTIUM: INTEL PENTIUM Introduced in 1993. It was also 32 bit microprocessor. It could execute 110 million instruction per second. It was originally named 80586. Cache memory. 8 KB for instruction. 8 KB for data.

INTEL PENTIUM PRO: INTEL PENTIUM PRO Introduced in 1995. It was also 32 bit microprocessor. It had 21 million transistors. Cache memory. 8KB for instruction 8KB for data. It had L2 cache (level 2 means cache memory divided into 2 levels) of 250KB.

INTEL PENTIUM II: INTEL PENTIUM II Introduced in 1997. It was also 32 bit microprocessor. It could execute 333million instruction per second. MMX (multimedia extent ion) technology was supported. L2 cache & processor were on one circuit.

INTEL PENTIUM II XEON: INTEL PENTIUM II XEON Introduced in 1998. It was also 32 bit Microprocessor. It was design for servers. L1 cache of 32 KB & L2 cache of 512 KB , 1MB or 2MB. It could work with 4 xenon's in same system.

INTEL PENTIUM III: INTEL PENTIUM III Introduced in 1999. It was also 32 bit MB. Its clock speed was 1GHZ.

INTEL PENTIUM IV: INTEL PENTIUM IV Introduced in 2000. It was also 32 bit MB. L1 cache was of 32 KB & L2 cache of 256 KB. It had 42 million transistor. All internal connections were made from aluminum to copper.

INTEL DUAL CORE: INTEL DUAL CORE Introduced in 2006. It was 32 bit or 64 bit microprocessor. It had two cores. It supported SMT technology. SMT : Simultaneously Multi threading. E.g. : adobe Photoshop supported SMT.

INTEL CORE 2 DUO: INTEL CORE 2 DUO It was introduced in 2006. It was 32 bit or 64 bit microprocessor.