1. T10111/3/20151 Computers Industry & Applications

2. T10111/3/20152 Computer Generations

3. T10111/3/20153 Computer Generations Generation “0” u pre-digital u Babbage u Hollerith u Atanasoff

4. T10111/3/20154 Computer Generations Generation 1 u 1944-1959 u vacuum tubes u direct key or paper/magnetic tape u hot, big, faster than humans, but... u UNIVAC, ORACLE, ENIAC

5. T10111/3/20155 Computer Generations Generation 2 u 1959-1964 u transistors u “little sandwiches” u no warm-up, cooler, less energy u paper or magnetic tape u IBM 1400

6. T10111/3/20156 Computer Generations Generation 3 u 1964-1972 u integrated circuit (chip) u thousands of circuits on single chip u smaller, cooler, less energy u IBM 360

7. T10111/3/20157 Computer Generations Generation 4 u 1972 - present u VSLI (Very Large Scale Integration) u now millions of components on chip u Intel, AMD u PCs and Macs

8. T10111/3/20158 Computer Generations Generation 5 u 1979-present u supercomputers u multiple, parallel processors

9. T10111/3/20159 Key Developments u Software u word processing -- “killer ap” u Short Term Memory u RAM u Long Term Memory u magnetic, optical disks

10. T10111/3/201510 Key Developments u Interface u GUI, CRT, mouse, others u Data Communications u MODEM -- modulate, demodulate u LANs & WANs

11. T10111/3/201511 Industry Segments u Computers (hardware) u mainframes u PCs u work stations

12. T10111/3/201512 Industry Segments u Peripherals u storage devices u ZIP, tape backup u components u key boards, video multi-use, converging

13. T10111/3/201513 Industry Segments u Software u pre-packaged u network-based

14. T10111/3/201514 Technology Trends u Multimedia u the next "killer ap“ u Drives sales and innovation

15. T10111/3/201515 Technology Trends u PDAs (personal data assistants) u crashed, then resurrected u Different companies dominate – Palm, Casio, Mindspring u tied to Internet, wireless phone

16. T10111/3/201516 Technology Trends u Videoconferencing u Net chat u Internet phone u Wireless videophones u Virtual Reality u military, medicine u net chat

17. T10111/3/201517 Information Service Provider u Creates content u Maintains editorial control u Delivered through distribution network u Can be: u entertainment u information u interactive service

18. T10111/3/201518 Common Carrier u Channel u distribution device or network u Carries all messages u service available to all on equal basis u non-discriminatory pricing/carriage u No direct financial interest in content

19. T10111/3/201519 Channels & Services u telephone network u railroad u US Mail u airlines u cable TV system u Internet backbone u 976 & 800 numbers u minitel u Comp-U-Serve u teletext u World Wide Web u AOL