Personal Computers. Penetration Personal computers are now in close to four-fifths of American...
-
Upload
clare-grant -
Category
Documents
-
view
213 -
download
0
Transcript of Personal Computers. Penetration Personal computers are now in close to four-fifths of American...
![Page 1: Personal Computers. Penetration Personal computers are now in close to four-fifths of American households It took telephones 85 years to get to this penetration.](https://reader036.fdocuments.in/reader036/viewer/2022082817/56649e415503460f94b33297/html5/thumbnails/1.jpg)
Personal Personal ComputersComputers
![Page 2: Personal Computers. Penetration Personal computers are now in close to four-fifths of American households It took telephones 85 years to get to this penetration.](https://reader036.fdocuments.in/reader036/viewer/2022082817/56649e415503460f94b33297/html5/thumbnails/2.jpg)
PenetrationPenetration• Personal computers are now in close
to four-fifths of American households• It took telephones 85 years to get to
this penetration rate
![Page 3: Personal Computers. Penetration Personal computers are now in close to four-fifths of American households It took telephones 85 years to get to this penetration.](https://reader036.fdocuments.in/reader036/viewer/2022082817/56649e415503460f94b33297/html5/thumbnails/3.jpg)
Brief HistoryBrief History• Herman Hollerith: 1890
– Working for the government to help count the census
– Data was input to a “memory”– Processed by a central processing unit– Results were output in a special format
![Page 4: Personal Computers. Penetration Personal computers are now in close to four-fifths of American households It took telephones 85 years to get to this penetration.](https://reader036.fdocuments.in/reader036/viewer/2022082817/56649e415503460f94b33297/html5/thumbnails/4.jpg)
Brief HistoryBrief HistoryBig ComputersBig Computers
• ENIAC– Electronic Numerical Integrator and
Computer– Introduced at end of World War II
• UNIVAC appeared in 1950• IBM ruled the roost
![Page 5: Personal Computers. Penetration Personal computers are now in close to four-fifths of American households It took telephones 85 years to get to this penetration.](https://reader036.fdocuments.in/reader036/viewer/2022082817/56649e415503460f94b33297/html5/thumbnails/5.jpg)
Brief HistoryBrief HistorySmall ComputersSmall Computers
• MITIS Altair 8800 in 1975• Apple II about 1977
– Was leader until early 1980s
• IBM Personal Computer 1981– Used an Intel chip
• Clones followed…
![Page 6: Personal Computers. Penetration Personal computers are now in close to four-fifths of American households It took telephones 85 years to get to this penetration.](https://reader036.fdocuments.in/reader036/viewer/2022082817/56649e415503460f94b33297/html5/thumbnails/6.jpg)
800 Pound Gorilla800 Pound Gorilla• Microsoft
– Bill Gates drops out of school to start it– By 2002 94% of PCs in the world have
some version of Microsoft Windows on them
![Page 7: Personal Computers. Penetration Personal computers are now in close to four-fifths of American households It took telephones 85 years to get to this penetration.](https://reader036.fdocuments.in/reader036/viewer/2022082817/56649e415503460f94b33297/html5/thumbnails/7.jpg)
Key ComponentsKey Components• Vacuum tube• Transistor 1947
– Begin the miniaturization of computers
• Integrated circuit 1958– Transistors on one chip– CPU goes from size of building to size of
a wafer
• Motherboard holds all the circuits
![Page 8: Personal Computers. Penetration Personal computers are now in close to four-fifths of American households It took telephones 85 years to get to this penetration.](https://reader036.fdocuments.in/reader036/viewer/2022082817/56649e415503460f94b33297/html5/thumbnails/8.jpg)
Computer MemoryComputer Memory• RAM
– Random Access Memory– Active when computer is turned on
• Not permanent
• Storage Memory– “Book” or permanent memory
• Both measured in megabytes or gigabytes
![Page 9: Personal Computers. Penetration Personal computers are now in close to four-fifths of American households It took telephones 85 years to get to this penetration.](https://reader036.fdocuments.in/reader036/viewer/2022082817/56649e415503460f94b33297/html5/thumbnails/9.jpg)
Storage MemoryStorage Memory• Hard drive• Floppy diskette• Zip diskette• Keydrives/Jumpdrives/Flashdrives• Compact Discs (CDs)• Digital Versatile or Digital Video
(DVD)
![Page 10: Personal Computers. Penetration Personal computers are now in close to four-fifths of American households It took telephones 85 years to get to this penetration.](https://reader036.fdocuments.in/reader036/viewer/2022082817/56649e415503460f94b33297/html5/thumbnails/10.jpg)
Input DevicesInput Devices• Keyboard• Mouse• Microphone• Scanner• Camera• Joystick• USB device
![Page 11: Personal Computers. Penetration Personal computers are now in close to four-fifths of American households It took telephones 85 years to get to this penetration.](https://reader036.fdocuments.in/reader036/viewer/2022082817/56649e415503460f94b33297/html5/thumbnails/11.jpg)
![Page 12: Personal Computers. Penetration Personal computers are now in close to four-fifths of American households It took telephones 85 years to get to this penetration.](https://reader036.fdocuments.in/reader036/viewer/2022082817/56649e415503460f94b33297/html5/thumbnails/12.jpg)
SoftwareSoftware• Applications or programs• Operating System
![Page 13: Personal Computers. Penetration Personal computers are now in close to four-fifths of American households It took telephones 85 years to get to this penetration.](https://reader036.fdocuments.in/reader036/viewer/2022082817/56649e415503460f94b33297/html5/thumbnails/13.jpg)
Moore’s LawMoore’s Law• Gordon Earle Moore
– Co-founder of Intel– Computing power doubles about every
18 months
![Page 14: Personal Computers. Penetration Personal computers are now in close to four-fifths of American households It took telephones 85 years to get to this penetration.](https://reader036.fdocuments.in/reader036/viewer/2022082817/56649e415503460f94b33297/html5/thumbnails/14.jpg)
Central Processing UnitCentral Processing Unit• 32-bit
– Most PCs have this type
• 64-bit– Latest Mac has this type– New PCs have this type– Better graphics on faster computers
![Page 15: Personal Computers. Penetration Personal computers are now in close to four-fifths of American households It took telephones 85 years to get to this penetration.](https://reader036.fdocuments.in/reader036/viewer/2022082817/56649e415503460f94b33297/html5/thumbnails/15.jpg)
TrendsTrends• Keydrives and other flash media
storage devices• Portable PCs (40% of market in 2003)• Flat panel monitors (about 50% of
sales in 2004)
![Page 16: Personal Computers. Penetration Personal computers are now in close to four-fifths of American households It took telephones 85 years to get to this penetration.](https://reader036.fdocuments.in/reader036/viewer/2022082817/56649e415503460f94b33297/html5/thumbnails/16.jpg)
PotpourriPotpourri• Computer Industry sold $41 billion in
equipment in 2002– Computers make up 67% of that amount
• Intel has 83% of chip market• About 40% of business software in
the world is pirated• Convergence, convergence,
convergence