Personal computer technology Submitted to Mr Bouzane Submitted

Personal computer technology Submitted to: Mr. Bouzane Submitted by: Janel Brown

O http: //inventors. about. com/library/blcoinde x. htm

The first computer O The first computer was invented in 1936 it was the first computer for WWII. It was invented by Konrad Zuse. It was called Z 1. O Then the first fully functioning electro-mechanical computer completed in 1939 the Z 2. The Z 4 had a memory of 1, 024 words. O Konrad Zuse’s Z 1 circa 1938

The first electronic computer O The Atanasoff- Berry computer was the first electronic computer invented by John Atanasoff and Clifford Berry in 1942.

The modern computer O The Harvard mark I computer was invented by Howard Aiken and Grace Hopper in 1944. It was 55 foot long and 8 feet high. 5 ton device contained almost 760, 000 separate pieces.

John Presper Eckert and John W. Mauchly O John Presper Eckert and John W. Mauchly invented the computer ENIAC 1 computer in 1946. It consumed 160 kilo watts of power it had 17, 468 vacuum tubes, 70, 000 resistors, 10, 000 capacitors, 1, 500 relays and 6, 000 manual switches and weighed 30 tons They also invented the UNIVAC computer in 1951. It was the first commercial computer. Eniac Univac

The first word processor- word star O Word star software was invented by Seymour Rubenstein and Rob Barnaby in 1979. 3. 0 version of word star was released in 1982. O Word. Perfect knocked word star out of processing market in 1980.

The modern computer - apple O Steve Jobs and Steve Wozniak invented the Apple Macintosh in 1984. The computer is 13. 6”h x 9. 6”w x 10. 9” D. It has 60 watts of power

Microsoft windows O Microsoft begins with a friendly war with apple. It was invented in 1985 by Bill Gates. Microsoft improved windows versions two years later. They also improved over the years and they are still improving today. They have windows 95, 98, 2000, XP, Vista

The floppy disk O The floppy disk was first called “memory disk”. The first floppy disk come out in 1971. It was invented by IBM engineers led by Alan Shugart. You can get 8 inch 5 ¼ , 3 ½ inch floppy disk. They are coated with magnetic iron oxide; computer data was written to and read from the disk’s surface. O

Pros and cons Pros Cons O Can access information O Can be addictive on many topics from anywhere in the world. O Send messages/ information to people through msn, facebook, email, etc. O Hacking O People may act like other people