Computer Era (1946 - Today)
Fourth Generation (1971 - Today)
Characteristics
Microprocessor - general purpose processor on a single chip
1 billion calculations per second
Themes
Faster
Smaller
More reliable
Cheaper
More powerful
Eniac versus 150 MHz Pentium
Famous Computers, etc.
1971 - First handheld calculator
Texas Instruments Cal-Tech
- 4 functions at $425
1973 - Ethernet designed
Now used for most Local Area Networks (LANs)
1975 - First Personal computer - Altair 8800
First easily available microcomputer
256 bytes (not k!) memory
Bill Gates co-wrote BASIC for it
1976 Apple 1
Apple Computer formed by Steve Jobs and Steve Wozniuk
MicroSoft incorporated
1976 First Cray Supercomputer
1977 Apple ][
1981 IBM PC
First "legitimate" microcomputer
IBM-PC, MS-DOS
1984 IBM PC Jr.
1984 Apple Macintosh
First computer with a graphicical user interface
1984 Super Bowl Commercial introducing the Macintosh (RealPlayer)
(Dial-Up)
(Cable-DSL)
1985 CD-ROM, invented by Phillips, produced in collaboration with Sony.
1985 Microsoft Windows Launched.
1988 First optical chip developed, it uses light instead of electricity to increase processing speed.
1993 Intel Pentium microprocessor released
1995 Windows '95 was launched by Bill Gates & Microsoft.
1995 JavaScript development announced by Netscape.
1999
Apple release the PowerMac G4
2000 Intel release very limited supplies of the 1GHz Pentium III chip.