Computer Introduction

What is Computer: A computer is an electronic device that receive input, stores or processes the input as per user instractions and provides output in desired format. Computers have become an integral part of our lives because they can accomplish easy tasks repeatedly without getting bored and complex ones repeatedly without commiting errors. In this tutorial we will discuss in detail about the different parts of computer that enable it to carry out tasks efficiently and correctly. We will also discus about microprocessors, the brain of computers, which actually do all the assigned tasks.

Classification of Computer: All modern computers and computing devices use microprocessors whose speeds and storage capacities are skyrocketing day by day. The developmental benchmark for computers is now their size. Computer are now classified on the basis of their use or size -

1. Desktop
2. Laptop
3. Tablet
4. Server
5. Mainframe
6. Super Computer

Mobile Phone Introduction

What is Mobile Phone: The origion of the Mobile Word is Move. So the Phone that is used wirelessly during the travel or moving period is called a Mobile or Cellular Phone. The Motorola DynaTAC 8000X the first commercial available handheld cellular mobile phone in 1984.

The Father of the Mobile Phone: Marteen Cooper (Born: 26 December 1928) is the inventor of the Mobile Phone. He was the first mobile user before 30 years ago. While at Motorola in the 1970s, Cooper invented the first handheld cellular mobile phone in 1973 and led the team that development it and brought it to market in 1983. Cooper is co-founder of numerous communications companies with his wife and business partner Arlene Harris. After the commencement of work in 1973, the first commercial service takes about 10 yeasrs to start. In 1983 commercial service started with 5 models of mobile phones.

10 Inventions that changed the World

FIRE (400,000 BCE): The controlled use of fire was an invention in the early Stone Age, with some of the earliest evidence dating back to hundreds of thousands of years age. It's not exactly certain when fire was first being used by humans, but most research puts it somewhere between 200,000 and 600,000 years ago.

WHEEL (3400 BCE): The next significant step in the history of innovation came with the creation of the wheel, sometime between 3300 and 3500 BCE We know this thanks to the discovery in southern Poland of the earliest known depiction of a wheeled vehicle on a claay pot.

MONEY (3000 BCE): The next critically important innovation that contributed to the development of a strong human civilization was money. Around 3000 BCE, the Sumerians were one of the first societies (if not the first) to begin using money to help the ease of commerce and exchanging of goods, replacing the barter system.