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.
alan turning
facts abouts alan turning
• NAME ;Alan Mathison Turing
•BORN ;23 June 1912
•DEATH ; 7 June 1954 (aged 41)
facts
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
the first generation of computers
this is the first generation of computers ^
the first generation of computers
The second generation of computers
The third generation of computers
The forth generation of computers
The fifth generation of computers
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
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
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•Also it can be £65.99