Discussion on I/O devices,data processing,types of computers.

Differences Between Input and Output Devices:

Input Devices:In computing, input devices are pieces of hardware used by another system or human to communicate with a computer.For instance, a keyboard or a mouse is an input device.It would be impossible for the user to use any device without an input because computers don't get the data that human inserts.More input devices are 

• Microphone 
• Graphics tablet
• Bar code reader

Input devices actually send data to the computer.
Output devices:An output device mainly converts the binary language or computer language to human readable form.It can be any part of computer hardware equipment.Visual display units (VDU) such as monitor,printer are output devices.It translates the codes to texts,graphics etc.More output devices are 

• Headphones
• Computer Speakers
• GPS. 

Output devices actually get the data from the computer. 

Process Involve in Getting Data into the Computer:

Here the picture shows that the input devices like keyboard or mouse helps to insert the data in the processing unit like flash memory,hard drive or chip.And it includes the conversation of raw data through the CPU and memory to output devices.In the commercial  world,data processing refers to the processing of data required to run organizations and businesses.There are six steps of data processing cycle:

1. Collection
2. Preparation
3. Input
4. Processing
5. output

Storage                                                                                                                                                                                                                                                                                  THE TYPES OF COMPUTERS REGARDING THEIR SIZES.

1.SUPER COMPUTERS:Super computers were made popular in the 1960s by Seymore Cray.These computers are the largest in terms of size They can occupy anything from a few feet to hundreds of feet.The top super computers are Roadrunner, Titan, Sunway TaihuLight.

 

2.MAINFRAMES:They are equally powerful but fall short in terms of the computation ability in supercomputers.System z9,Hitachis z800 are examples of mainframes.

3.MINICOMPUTERS:The first mini computer was reveled in 1967 by Digital Equipment Corporation.Also known as mid range computers.

4.MICROCOMPUTERS/PERSONAL COMPUTERS:Microcomputers are the smallest,least expensive, and most used computer.There are desktop,mobile, wearable computers.