Secret about Computers
History of Input and Output Devices
Computer
John Vincent Atanasoff
The First computer
Now's computer
WHAT IS THE DIFFERENCE
I need your help
Output devices
An output device is any piece of computer hardware equipment used to communicate the results of data processing carried out by an information processing system (such as a computer) which converts the electronically generated information into human-readable form.
Printer
Speaker
Head Phone
Input Devices
In computing, an input device is a peripheral (piece of computer hardware equipment) used to provide data and control signals to an information processing system such as a computer or information appliance. Examples of input devices include keyboards, mouse, scanners, digital cameras and joysticks.
RAM
Power Supply
Network Card
Graphics Card
Mother board
Hard Drive
Binary Code
A Video
Alan Turing
Alan Mathison Turing OBE FRS was a pioneering English computer scientist, mathematician, logician, cryptanalyst and theoretical biologist.Wikipedia
Born: June 23, 1912, Maida Vale, London, United Kingdom
Died: June 7, 1954, Wilmslow, United Kingdom
Education: Princeton University (1936–1938), more
Network
RING network
This type of network can transfer data quickly, even if there are a large number of devices connected because the data only flows in one direction, so there won’t be any data collisions
If the main cable fails or any device is faulty then the whole network will fail
STAR network
very reliable – if one cable or device fails then all the others will continue to work
expensive to install as this type of network uses the most cable (network cable is expensive)
BUS network
if the main cable fails or gets damaged the whole network will fail