By Makayla ChavezBy Makayla Chavez

11° Meirik ° Meirik

The Complex Number Calculator (CNC) is completed.

1939

Konrad Zuse finishes the Z3 computer.

1941Jean Hoerni's Planar process, invented at Fairchild Camera and Instrument Corp., protects transistor junctions with a

layer of oxide.

1959

The Commodore PET (Personal Electronic Transactor) — the first of several personal computers

released in 1977

1977 Texas Instruments Inc. introduced Speak & Spell, a talking learning aid for ages 7

and up.

1978

The Motorola 68000 microprocessor exhibited a processing speed far greater than its

contemporaries.

1979Apple Computer launched the

Macintosh

1984

The Amiga 1000 is

released.

1985

1986

   David Miller of AT&T Bell Labs patented the optical transistor

Netscape Communications Corporation is founded.

1994

• BIT- smallest unitBIT- smallest unit

• Byte- more memoryByte- more memory

• KB- 1024 byesKB- 1024 byes

• Mb-1024kbMb-1024kb

• Tb- about as much memory as all the books in a libraryTb- about as much memory as all the books in a library

• Pb-1024 tbPb-1024 tb

• Eb- 1024 pbEb- 1024 pb

• Zb-1024 ebZb-1024 eb

• Yb-1024 zbYb-1024 zb

• Ram-random access memoryRam-random access memory

• the first computer was invented in 1936 by Konrad Zuse. It was called Z1 computer. It was the first computer that was freely programmable.

•The first laptop was made by Adam Osbourne ‘1, it costs approximately $1750.

Virus

Worm

Trojan horse

A program that change the way a computer works is a computer virus. It form by itself.

programs that change on their own from system to system are called worms.

Trojan horses are impostors, meaning they are files that claim to be something good but are actually really bad.

• IBMIBM• APPLEAPPLE• DELLDELL• TOSHIBATOSHIBA• HP HP

~Thomas J. Watson, Sr~Steve Wozniak co-founded Apple ~Michael Dell~Toshiba Corp.

~William Hewlett and David Packard

bibliographybibliography

• http://www.computerhistory.org/timelhttp://www.computerhistory.org/timelineine/?year=1994/?year=1994

•http;//kb.iu.edu/data/ackw.htmlhttp;//kb.iu.edu/data/ackw.html• http://wiki.answers.com/Q/Who_creathttp://wiki.answers.com/Q/Who_creat

ed_the_Apple_computered_the_Apple_computer•http://ezinearticles.com/?Who-Invent

ed-Dell-Computers?&id=2064031•http://www.chacha.com/question/

who-created-%27hp%27-software