History of the computer By: Dylan Richardson

Timeline

1970-Xerox opens Palo Alto research center.

1971-RCA sells its computer division . 1972-Hewlett Packard announces its hp-

30. 1973-The Micril was invented. 1974-Xeroxes palo alto research center

designed the Alto. 1975-Xerox closes its computer division.

Timeline

1985-The Amiga 1000 is released. 1995-Java is introduced. 2001-Xbox is released. 2002-Over 1 billion pc’s have been

sold. 2005-Ebay gets Skype. 2006-Skype has over 100,000 users.

Diagram

CPU

CPU stands for central processing unit. It is almost like the brain of the computer.

Video card

A video card is a expansion card that allow the computer to send graphical information to a video display like the monitor.

RAM

RAM stands for random access memory. You can access any memory cell directly if you know the row and column it is on.

Hard drive

It is a efficient computer memory device.

CD-ROM

CD-ROM stands for compact disk read only memory.

USB Port

USB stands for universal serial bus connector. It allows you to plug in mice, keyboards, and printers.

PCI Card

PCI stands for peripheral component interconnect. PCI’s include stuff like network cards and sound cards.

Motherboard

It allows all the parts of the computer to recieve power and communicate with each other.

Power source

The power source for computers is electric.

Sources

Howstuffworks.com Computerhistory.org