Timeline

Cave Painting

35,000 BCE

Cave art is significant because it was what people in prehistoric times did in order to record history and culture. But, prehistoric cave art was also significant because it also served as a warning to people who were to come later. For example, they could show the way to kill a beast or warn them of a beast.

Clay Tablets

3200 BCE

Clay tablets were a medium used for writing. They were common in the Fertile Crescent, from about the 5th millennium BC. A clay tablet is a more or less flat surface made of clay. Using a stylus, symbols were pressed into the soft clay.

Punch Cards

1750

Punched cards were widely used through much of the 20th century in the data processing industry, where specialized and increasingly complex unit record machines, organized into semiautomatic data processing systems, used punched cards for data input, output, and storage.

Mainframe Computer

1930

A mainframe computer, informally called a mainframe or big iron, is a computer used primarily by large organizations for critical applications, bulk data processing (such as the census and industry and consumer statistics, enterprise resource planning, and large-scale transaction processing).

Laptop

1981

A laptop, laptop computer is a small, portable personal computer (PC) with a screen and alphanumeric keyboard. T Laptops are folded shut for transportation, and thus are suitable for mobile use. Its name comes from lap, as it was deemed practical to be placed on a person's lap when being used. Today, laptops are the used in a variety of settings, such as at work, in education, for playing games, web browsing, for personal multimedia, and general home computer use.

Smartphone

1992

a smartphone keeps users connected through messaging services, email, video calls and social networking apps, in addition to standard text messaging and phone calls. A smartphone functions as a handheld mobile computer for accessing and browsing the Web.

USB/Flash Drive

1999

A USB flash drive is a data storage device that includes flash memory with an integrated USB interface. It is typically removable, rewritable and much smaller than an optical disc. Most weigh less than 30 g.