NITS

Central Processing Unit's - History and Evolution

Computers have become a part of our everyday lives, but the first computer was developed in 1946 at the University of Pennsylvania!

Electronic Numerical Integrator and Computer or ENIAC was the processo
Alan Turing and John von Neumann presented the reprogramming feature that is so widely utilised nowadays. A modern computer's architecture is based on von Neumann's design.
Microprocessors have come a long way since Intel's 4004 - the first microprocessor ever developed.
We'll take a look at what's happened so far.
In the early 1970s, Ted Hoff and others at Intel came up with the idea for the first Processor, which was then produced by the company.
Intel's 4004 processor was the company's first processor.

1971 - Intel 4004

Designed by Intel's Federico Faggin and Ted Hoff and Busicom's Masatoshi Shima, it went on sale on November 15, 1971. "
2300 transistors with pMOS technology were used in the device.
There were a total of 46 instructions.
The intended clock speed was 1 MHz, but it was only achieved at 740 kHz.
As the world's first microprocessor, it powered the Busicom 141-PF calculator, which is still in use today.

1972 - Intel 8008

Introduced in August 1972, it is also known as MCS-8.
CTC's Victor Poor and Harry Pyle worked on it, as did Intel's Ted Hoff, Faggin, Stanley Mazor, and Hal Feeney.
There were 3500 transistors in it.
But it was slower than the 4004.
This computer had a clock speed of 0.5 MHz and a total number of 48 instructions.
Micral and SCELBI were the first personal computers to use it.

1974 - Intel 8080

Intel 8080 was introduced in 1974.
Faggin, Mazor, and Masatoshi Shima created it in April 1974.
The clock speed was increased to 2 MHz, and it used 6000 transistors and nMOS technology. »
Most notable was the separation of the address (16 bit) and data (8 bit) buses, which was a major advancement.
It also had 256 input/output ports.
The MITS Altair 8800 and IMSAI 8080 both used it.
Similarly, the main processor in Space Invaders (an arcade video game) was the 8080 microprocessor.

1974 - Motorola 6800

The Motorola processor had no I/O ports.
I/Os were memory-mapped.
In addition, the instruction set contained 72 instructions at a clock speed of just 2 MHz
HCF (Halt and Catch Fire) opcode was used for the first time, preventing the processor from responding to any interrupts until it was reset.
Motorola introduced HCF, a self-testing feature, for the first time.

1977 - Intel 8085

The processor was also used as a microcontroller, operating on a +5V supply, unlike the other processors formed so far.

Von Neumann architecture was used for the first time.
"It was constructed with nMOS technology and 6500 transistors."
There were 256 instructions in the instruction set.
In NASA and ESA space explorations, the radiation-hardened version was employed.

1978 - Intel 8086

The clock speed was designed to be 10MHz.
Bruce Ravenel was part of the architecture development team, which included Stephen P. Morse.
Jim McKevitt, John Bayliss, and William Pohlman designed Logic, with William Pohlman serving as the project manager.
Mycron 2000 was the first microcomputer to use it.

1979 - Intel 8088

HMOS-based 8088 was launched on July 1st.
PLCC (plastic leaded chip carrier) package was available as well as a 40-pin DIP package. »
There was only 8-bits of data in the path, however.
10 MHz was the intended frequency.
8088 was the basis for the original IBM PC.

1987 - SPARC

It's a Sun Microsystems processor.
It had a 40 MHz clock speed.
8 million transistors and 256 I/O pins were used to build it.
According to the TOP500 list, Fujitsu's K Computer is ranked number one among the world's 500 fastest supercomputers.
It was based on the SPARC architecture.

1991 - Am386

There was a striking similarity between this AMD (Advanced Micro Devices) processor and Intel x86 processors.
In terms of clock speed, the processor was a competitor to Intel's.
Many manufacturers chose AMD's floating-point unit because of its excellent performance.

1993 - Pentium Processor

P5 was the first Pentium processor.
Two models were available: 510-pin version and 567-pin
1 million transistors were used in its construction.
At the time, this 32-bit processor was the most advanced processor available.
There were two instructions that could be executed at the same time in this superscalar x86 microarchitecture, speeding up computation.

1995 - Pentium Pro

Pentium II was the first Pentium processor.
It was packaged in a ceramic multi-chip module (MCM) with 387 pins, which was a first for the industry.
In addition to its dual processor configuration, it has a 200 MHz clock speed.
In order to build this processor, approximately 5.5 million transistors were used.
MMX instructions were not included.
This processor was utilised in ASCI Red, which had teraFLOP (one trillion floating-point operations per second) performance or results.

1997- Pentium II

The Pentium II processor family was introduced on May 7 and offered a wide range of processors.
With each new model, the clock speed was steadily increased to 450 MHz.
A slot or socket module was used instead of the traditional processor.
Because of this, computer manufacturers were able to fit it into a small space.
Under this umbrella, a number of processors were introduced: Some of these were Klamath;
Deschutes; Pentium II overdrive; Tonga, etc.
It had a heatsink/fan combination that could be removed, which helped with heat dissipation.

1999-Pentium III

It was introduced on February 26th.
The SSE instruction was added to the previous model to speed up floating-point calculations.
Like Pentium II, this processor was released in two versions: Celeron (low-end version) and Xeon (high-end version) (High-end version).
The following processors are included in this family: Katmai; Coppermine; Coppermine T and Tualatin.
PSN (Processor Serial Number) was introduced in the production process that formed the processor's unique identity.

1999 - Athlon

Athlon was announced by AMD on June 23.
A clock speed of 800 MHz was achieved by using 37 million transistors.
It came in a 453-pin PGA (Pin Grid Array) package.
It was faster than Intel's Pentium III, which made Athlon a legitimate competitor. »
That made it the first processor to reach the 1 gigahertz speed mark in history.
Enhanced 3DNow! was first launched, which sped up by 2-4 times.

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