1.First Computers were Huge
The first computers were made around 1940’s. They were huge and could fit into large rooms. Their energy consumption was huge and their appearance was very different from the modern day computers, particularly the portable small-sized laptop computers.
2.Computers effect Instructions
Computers are designed to effect the instructions given to them. Usually, these instructions are extremely simple and have to do with addition of numbers and movement of data from one area to another. A single computer program can have instructions ranging to a few commands to millions of commands depending on its complexity. Modern day computer applications like web browsers, word processors and graphic editors are developed by huge programming teams.
A computer memory keeps numbers in large quantities of addressed cells and is accessed fast by the processing unit to perform calculations. Computers have two kinds of memory namely the Random Access Memory and the Read Only Memory. The Read Only Memory features pre-written data and software that the processing unit can only read and the Random Access Memory features data that is written and accessed at any given time.
Information exchange in computers is facilitated by the computer’s interaction with different input or output devices. Such peripheral devices are mouse, keyboard, hard drive, display, printers among others. Computers help in forming networks that make it possible for users to exchange and share data stored in varying locations. The internet is a huge computer network that spans the globe enabling users to access the World Wide Web, email among other applications.
5.Computers are embedded in many other Equipment
Though computers are thought as the devices used on the day-to-day lives to write documents, surf the internet among others, there are tiny computers embedded in other small devices such as toys, mobile phones and MP3 players. People are always using computers without their knowledge.
6.Computers enhance Online Transactions
Computers combined with the internet have created a global economy. Annually, an estimated $10 trillion are transacted online. The U.S. Census estimated that about $3.7 trillion were transacted through domestic online transactions in 2008 in the U.S. alone. Internet related jobs contributed about $300 billion to the GDP in 2009.
7.Digital Literacy is a Necessity
From 1998 to 2008, there was a 26% growth in domestic IT jobs, which is about 4 times more than the employment rate in the U.S. It is estimated that by 2018, employment in the IT sector will have grown by 22%. An estimated 96% of all working persons in the U.S. use new technologies to communicate in their day to day lives and 32% of working Americans make use of the internet in their jobs.
8.The First Computer
The first computer ever creates was called the Z1. It was a 1936 invention by Konrad Zuse. Zuse invented the next computer called Z2 in 1939. TheZ2 become the very first electro-mechanical to function fully. Steve Wozniak and Steve Jobs created the first Apple computer from parts that they employees gave freely.
An estimated 1,319,872,109 people use the internet. The World Wide Web took four years to access 50 million people. This is an extremely short period compared to 13 year taken by television and 38 years taken by radio.
About 70 percent of all virus programmers are employed on contract by organized crime syndicates. Rother J, a computer program was the first virus to be seen ‘in the wild’ which means it occurred outside the single lab or computer where it was developed.