Thursday, March 26, 2020

Computer Generations


Computer Generations
There are five generations of computer:
First generation–1940 -1956
Second generation–1956 -1963
Third generation–1964 -1971
Fourth generation–1972 -2010
Fifth generation–2010 to present

The First Generation
The first computers used vacuum tubes for circuitry and magnetic drums for memory, and were often enormous, taking up entire rooms. They were very expensive to operate and in addition to using a great deal of electricity, generated a lot of heat, which was often the cause of malfunctions.

vacuum tubes

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First generation computers relied on machine language, the lowest-level programming language understood by computers, to perform operations, and they could only solve one problem at a time. First generation computers input were based on punched cards and paper tape, and output was displayed on printouts.

The Second Generation
In second Generation computers, Transistors replaced vacuum tubes and ushered in the second generation of computers. One transistor replaced the equivalent of 40 vacuum tubes.
Allowing computers to become smaller, faster, cheaper, more energy-efficient and more reliable. But it generated a great deal of heat that can damage the computer.
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Second-generation computers moved from cryptic binary machine language to symbolic, or assembly, languages, which allowed programmers to specify instructions in words.
Second-generation computers still relied on punched cards for input and printouts for output. These were also the first computers that stored their instructions in their memory, which moved from a magnetic drum to magnetic core technology.

The Third Generation
The development of the integrated circuit was the hallmark of the third generation of computers. Transistors were miniaturized and placed on silicon chips, called semiconductors, which drastically increased the speed and efficiency of computers.
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Much smaller and cheaper compare to the second generation computers. It could carry out instructions in billionths of a second.
Users interacted with third generation computers through keyboards and monitors and interfaced with an operating system, which allowed the device to run many different applications at one time with a central program that monitored the memory.
Computers for the first time became accessible to a mass audience because they were smaller and cheaper than their predecessors.

The Fourth Generation
The microprocessor brought the fourth generation of computers, as thousands of integrated circuits were built onto a single silicon chip. As these small computers became more powerful, they could be linked together to form networks, which eventually led to the development of the Internet.
Fourth generation computers also saw the development of GUI's, the mouse and handheld devices.
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 The Fifth Generation
Fifth   generation is based on parallel processing hardware and AI (Artificial Intelligence) software. AI is an emerging branch in computer science, which interprets the means and method of making computers think like human beings. All the high-level languages like C and C++, Java, .Net etc., are used in this generation.  The goal is to develop devices that respond to natural language input and are capable of learning and self-organization.
There are some applications, such as voice recognition, that are being used today.
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The Sixth Generation 
The sixth generation it could be defined as the era of intelligent computers, based on artificial neural networks or “artificial brains”. Artificial Intelligence (AI) or artificial brains is a concept in programming which enables the devices to think and take actions on their own.
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The 7th Generation

 7th gen means it’s the 7th official release of a new processor line, usually associated with the Intel Company. Typically processors are release 1–3 times a year. It used to be a little more predictable with a system of development and release called tick-(new architecture) and -tock(improvements).
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The 8th Generation 
The 8th Generation Intel Core processors redefine mainstream desktop PC performance with up to six cores for more processing power—that’s two more cores than the previous generation Intel Core processor family—Intel Turbo Boost 2.0 technology to increase the maximum turbo frequency up to 4.7 GHz, and up to 12 MB of cache memory. 
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Intel Hyper-threading technology delivers up to 12-way multitasking support in the latest generation of Intel Core processors. For the enthusiast, the unlocked 8th Generation Intel Core i7-8700K processor provides you the opportunity to tweak the platform performance to its fullest potential and enjoy great gaming and VR experiences.

 The 9th Generation 
The 9th Generation processor takes mainstream desktop PC performance to a whole new level. At the top of the stack, our mainstream flagship, the new i9-9900K. The first Intel Core i9 desktop processor for the mainstream users. Best in class, the i9-9900K with 16MB of cache and Intel Turbo Boost 2.0 technology cranks maximum turbo frequency up to blazing 5.0 GHz. Throw in high performing 16-way multitasking support powered by 8 cores with Intel Hyper-Threading Technology (Intel HT Technology) to conquer the most demanding workloads. Want to reach for even greater levels of performance? — Over clock confidently with new and enhanced features like Solder Thermal Interface Material (STIM) and improved over clocking customizations to tweak the processor performance to its unleashed potential.
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Sunday, March 15, 2020

History of Computers



Abacus

The abacus was invented in Babylonia in 2400 B.C. An abacus is a mechanical device used to perform basic arithmetic operations. The abacus in the form we are most familiar, was first used in China in around 500 B.C. 

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Napier’s Bones

Napier’s bones Invented by John Napier in 1614.Allowed the operator to multiply, divide and calculate square and cube roots by moving the rods around and placing them in specially constructed boards.

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Slide Rule


Slide Rule Invented by William Oughtred in1622.It is based on Napier's ideas about logarithms. It is used primarily for multiplication, division, roots, logarithms and Trigonometry. It is not normally used for addition or subtraction.

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Pascaline

Pascaline invented by Blaise Pascal in 1642.It had limitation to addition and subtraction. It is too expensive.

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Stepped Reckoner

Stepped Reckoner Invented by Gottfried Wilhelm Leibniz in 1672.The machine that can add, subtract, multiply and divide automatically.

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Jacquard Loom

The Jacquard loom is a mechanical loom, invented by Joseph-Marie Jacquard in 1881. It is an automatic loom controlled by punched cards.
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 Arithmometer

A mechanical calculator invented by Thomas de Colmar in 1820. The first reliable, useful and commercially successful calculating machine. The machine could perform the four basic mathematics functions. The first mass-produced calculating machine.
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Difference Engine and Analytical Engine

It an automatic, mechanical calculator designed to tabulate polynomial functions and invented by Charles Babbage in 1822 and 1834. It is the first mechanical computer.

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First Computer Programmer

In 1840, Augusta Ada Byron suggests to Babbage that he use the binary system. She writes programs for the Analytical Engine.
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Scheutzian Calculation Engine


Scheutzian Calculation Engine Invented by Per Georg Scheutz in 1843.It is based on Charles Babbage's difference engine. The first printing calculator.

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Tabulating Machine

Tabulating Machine Invented by Herman Hollerith in 1890. It assist in summarizing information and accounting.

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Havard Mark 1


Havard Mark 1 also known as IBM Automatic Sequence Controlled Calculator (ASCC).It invented by Howard H. Aikenin 1943, the first electro-mechanical computer.

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Z 1

Z1 is the first programmable computer. Which created by Konrad Zuse in Germany from 1936 to 1938.To program the Z1 required that the user insert punch tape into a punch tape reader and all output was also generated through punch tape.

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Atanasoff-Berry Computer(ABC)

It was the first electronic digital computing device. Which invented by Professor John Atanasoff and graduate student Clifford Berry at Iowa State University between 1939 and 1942.
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ENIAC

ENIAC stands for Electronic Numerical Integrator and Computer. It was the first electronic general-purpose computer. Which completed in 1946 and developed by John Presper Eckert and John W. Mauchl.
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UNIVAC 1

The UNIVAC I(Universal Automatic Computer 1) was the first commercial computer. Which designed by J. Presper Eckert and John Mauchly.
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EDVAC

EDVAC stands for Electronic Discrete Variable Automatic Computer. The First Stored Program Computer, designed by Von Neumann in 1952.It has a memory to hold both a stored program as well as data.
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The First Portable Computer

Osborne 1–the first portable computer, released in 1981 by the Osborne Computer Corporation.
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The First Computer Company

The first computer company was the Electronic Controls Company which was founded in 1949 by J. Presper Eckert and John Mauchly.
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Wednesday, March 11, 2020

About Computer types


Super Computers

The most powerful computers in terms of performance and data processing are Super Computers. Super Computers used by large organizations. Super Computers are used for Research and exploration purpose, like NASA use for launching space shuttles, Control them and other exploration purpose.

  • Seymour Cray designed the first Super Computer “CDC 6600” in 1964.


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 Super Computers Uses :-
  • Space Exploration.
  • Earthquake Studies.
  • Weather Forecasting.
  • Nuclear Weapons Testing.


Popular Super Computers :-
  • IBM’s Sequoia, in United States.
  • Fujitsu K Computer in Japan.
  • IBM’s Mira in United States.
  • IBM’s Super MUC in Germany.
  •  NUDT Tianhe-1 A in China.

  • Indian Super Computer “PARAM 8000” named by Center for Development of Advanced Computing (C-DAC) headed by Dr. Vijay Pandurang Bhatkar was launched on July 1, 1991. It was released in 1991 by C-DAC and was replicated and installed at ICAD MOSCOW in 1991 under Russian Collaboration.


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Mainframe Computers

 Mainframe Computers are not as powerful as Super Computers but they are quite, expensive and uses by large firms and government organizations.

Popular Mainframe Computers :-

  • Fujitsu’s I C L, V M E (Virtual Machine Environment).
  • Hitachi’s Z 800.


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Mini Computers


Mini Computers are used by small businesses and firms. Mini Computers are also called as “Mid-range Computers”. These Computers are not designed for single user. Individual departments of a large company or organizations use Mini Computers for specific purpose.

     Popular Mini Computers :-

  • K-202(16-bit).
  • Texas instruments TI-990.
  • S D S - 92.



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Micro Computers

Desktop Computers, Laptops, personal digital assistant (PDA), tablets and smart phones are Micro Computers. Micro Computers are designed for use by one person at a time. Micro Computers are widely uses and fastest growing computers. These are cheapest than other three types of computers. It’s generally use for entertainment, education and work purpose.

  •  The first Micro Computer was Micral, released in 1973 by R2E. 


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Computer full form and types

The word Computer Comes from the word “Compute” (A Latin word) which means to Calculate.

Computer full form "Commonly Operated Machine Particularly Used for Training and Education Research".

Computer types - 

                                   There are four types of Computers

  1. Super Computer.
  2. Mainframe Computer.
  3. Mini Computer.
  4. Micro Computer.



Tuesday, March 10, 2020


May God give you all the colors of life, colors of joy, colors of happiness, colors of friendship, colors of love and all other colors you want in your life. Wish you and your family a very  Happy Holi.