Tim burners-lee and alan turning

tim berners-lee

•He was a very keen trainspotter when he was a child and he enjoyed playing with model railways.

• Berners-Lee is a British computer scientist who invented the world wide web.

• Timothy John Berners Lee was born on 8 June 1955 and grew up in London. He studied physics at Oxford University and became a software engineer.

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tim berners - lee more infomation

This might give you a better idea of Tim berners - lee

alan turning

facts abouts alan turning

• NAME ;Alan Mathison Turing

•BORN ;23 June 1912

•DEATH ; 7 June 1954 (aged 41)

facts

Alan Turing was born on 23 June, 1912, in London. His father was in the Indian Civil Service and Turing's parents lived in India until his father's retirement in 1926. Turing and his brother stayed with friends and relatives in England. Turing studied mathematics at Cambridge University, and subsequently taught there, working in the burgeoning world of quantum mechanics. It was at Cambridge that he developed the proof which states that automatic computation cannot solve all mathematical problems. This concept, also known as the Turing machine, is considered the basis for the modern theory of computation.
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Who was Alan Turing?


Alan Turing was not a well-known figure during his lifetime. But today he is famous for being an eccentric yet passionate British mathematician, who conceived modern computing and played a crucial part in the Allied victory over Nazi Germany in WWII.

Alan Turing spent much of his early life separated from his parents, as his father worked in the British administration of India.

At 13 years old, he was sent to Sherborne School, a large boarding school in Dorset. The rigid education system gave his free-ranging scientific mind little encouragement, so Turing studied advanced modern scientific ideas, such as relativity, on his own, running far ahead of the school syllabus

how he died

Alan Turing cause of death was Cyanide poisoning

Alan Turing OBE, FRS died in Wilmslow, England on June 7th 1954. He committed suicide by eating an apple laced with cyanide following his prosecution for homesexual acts (illegal at that time in the UK) He was 41 years, 11 months and 15 days old when he died

the first generation of computers

this is the first generation of computers ^

the first generation of computers

Since there was all types of items that could be classified as a computer, it is difficult to pinpoint when the first computer was created. The first computer that was programmable was created between 1936 and 1938 by a man named Konrad Zuse in Germany. This computer was called a Z1, and it is said to be the first electrical binary operating computer

The second generation of computers

The transition from first generation to second generation of computers was not abrupt. There was all round development in technology, designs and programming languages. Diode and transistor technology formed the basis of the electronic switches and the switching time came down to around 0.3 microseconds.

The third generation of computers

In this era, there were several innovations in various fields of computer technology. These include Integrated Circuits (ICs), Semiconductor Memories, Microprogramming, various patterns of parallel processing and introduction of Operating Systems and time-sharing. In the Integrated Circuit, division there was gradual progress. Firstly, there were small-scale integration (SSI) circuits (having 10 devices per chip), which evolved to medium scale integrated (MSI) circuits (having 100 devices per chip). There were also developments of multi-layered printed circuits.

The forth generation of computers

In this generation, there were developments of large-scale integration or LSI (1000 devices per chip) and very large-scale integration or VLSI (10000 devices per chip). These developments enabled the entire processor to fit into a single chip and in fact, for simple systems, the entire computer with processor; main memory and I/O controllers could fit on a single chip.

The fifth generation of computers

In this period, computer technology achieved more superiority and parallel processing, which was until limited to vector processing and pipelining, where hundreds of processors could all work on various parts of a single program. There were introduction of systems like the Sequent Balance 8000, which connected up to twenty processors to one shared memory module.

Inputs and Outputs

The input is what sets an electrical circuit in action. Any of the following components can be used as inputs:

  • a switch (eg push-switch, microswitch)
  • a key pad
  • a Light Dependent Resistor (LDR)
  • a thermistor
  • a photodiode
  • a phototransistor
  • an opto-isolator
  • a proximity switch or reed switch.

The output is what results from an electrical circuit. Any of the following components may be used as outputs:

  • an LED
  • a lamp
  • a buzzer
  • a piezo
  • a motor or stepper motor
  • a solenoid
  • a relay
  • a seven-segment display.

CPU - Central Processing Unit

Sometimes referred to simply as the central processor, but more commonly called processor, the CPU is the brains of the computer where most calculations take place. In terms of computing power, the CPU is the most important element of a computer system

Ram and Rom

ROM is memory that cannot be changed by a program or user. ROM retains its memory even after the computer is turned off. For example, ROM stores the instructions for the computer to start up when it is turned on again.

RAM

RAM is a fast temporary type of memory in which programs, applications and data are stored. Here are some examples of what's stored in RAM:

  • the operating system
  • applications
  • the graphical user interface (GUI)

Raspberry pie

What is it ??????

•The Raspberry Pi is a low cost, credit-card sized computer that plugs into a computer monitor or TV , and uses a standard (good )keyboard and mouse.

•It is a capable little computer which can be used in electronics projects, and for many of the things that your desktop PC does, like spreadsheets, word-processing and games.

• It also plays high-definition video. We want to see it being used by kids all over the world to learn how computers work, how to manipulate the electronic world around them, and how to program. also it can play mine craft on it

•Everyone takes different kinds of inspiration before they start a Pi project – whether it’s following a guide in a book or online, and you can use it from the age of 5

•The cost of Raspberry pi is £120.00 on amazon


•Also it can be £65.99

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