The History Of Computing
All you want to know about Computing
What's a computer?
A computer is an electronic device which is capable of receiving information (data) in a particular form and of performing a sequence of operations in accordance with a predetermined but variable set of procedural instructions (programs) to produce a result in the form of information or signals.
PARTS OF THE COMPUTER
INPUT DEVICES
Examples of Input devices are:
Mouse
Keyboard
Joystick
Touch pad
Scanner
Optional pen
Microphone and many others
JOYSTICK
MICROPHONE
KEYBOARD
OUTPUT DEVICES
Examples of output devices are:
Speakers
Head set
Head phone
VDU
Printer
Plotters
SPEAKER
PRINTER
PROJECTOR
HARDWARE DEVICES
Below are some examples of hardware devices
MOTHERBOARD
RAM (Random Access Memory)
GRAPHICS CARD
BINARY CODE
ALAN TURING
Who is Alan Turing?
Alan Mathison Turing was born on 23 June 1912, the second and last child (after his brother John) of Julius Mathison and Ethel Sara Turing. The unusual name of Turing placed him in a distinctive family tree of English gentry, far from rich but determinedly upper-middle-class in the peculiar sense of the English class system.In four inadequate words Alan Turing appears now as the founder of computer science, the originator of the dominant technology of the late twentieth century, but these words were not spoken in his own lifetime, and he may yet be seen in a different light in the future. They are also words very remote from the circumstances of his birth and infancy.
COMPUTER NETWORK
What is a computer network?
-Bus Network
-Ring Network
-Star Network
The advantages of a computer network are:
-You can work on any computer connected to the network.
-You can share the same information.
-The internet doesn't need the internet to work.
The disadvantages of a computer network:
-It takes a lot of time to transfer information if there are a lot of computers.
-In some networks, if one computer fails, the rest fail.
BUS NETWORK
The advantage is that it's easy to install new computer.
However, if the bus network fails, all the computers fails.
RING NETWORK
The advantage is that it goes in one direction until is gets to its destination.
However, if one of the computer fails, the whole ring stops.
STAR NETWORK
The advantage is that if one computer fails, the others don't stop working; they keep working.
However, the cables are very expensive.