1. History of Computers

2. Who invented the computer? This question without a simple answer. The real answer is that many inventors contributed to the history of computers and that a computer is a complex piece of machinery made up of many parts, each of which can be considered a separate invention.

4. History of Computers 1930-90 1936 Konrad Zuse - Z1 Computer First freely programmable computer. 1936

5. 1942 John Atanasoff & Clifford Berry ABC Computer. Who was first in the computing biz is not always as easy as ABC. 1942

6. 19441944 Howard Aiken & Grace Hopper Harvard Mark I Computer The Harvard Mark 1 computer.

7. 1946 John Presper Eckert & John W. Mauchly ENIAC 1 Computer 20,000 vacuum tubes later... 1946 1948 Frederic Williams & Tom Kilburn Manchester Baby Computer & The Williams Tube Baby and the Williams Tube turn on the memories. 1948 1947/48 John Bardeen, Walter Brattain & Wiliam Shockley The Transistor No, a transistor is not a computer, but this invention greatly affected the history of computers. 1947/48

8. 1951 John Presper Eckert & John W. Mauchly UNIVAC Computer First commercial computer & able to pick presidential winners. 1951 1953 International Business Machines IBM 701 EDPM Computer IBM enters into 'The History of Computers'. 1953 1954 John Backus & IBM FORTRAN Computer Programming Language The first successful high level programming language.1955 19541955

9. (In Use 1959) Stanford Research Institute, Bank of America, and General Electric ERMA and MICR The first bank industry computer - also MICR (magnetic ink character recognition) for reading checks. (In Use 1959) 1958 Jack Kilby & Robert Noyce The Integrated Circuit Otherwise known as 'The Chip‘ 1958 1962 Steve Russell & MIT Spacewar Computer Game The first computer game invented. 1962 1964 Douglas Engelbart Computer Mouse & Windows Nicknamed the mouse because the tail came out the end. 1964

10. 1969 ARPAnet The original Internet. 1969 1970 Intel 1103 Computer Memory The world's first available dynamic RAM chip. 1970 1971 Faggin, Hoff & Mazor Intel 4004 Computer Microprocessor The first microprocessor. 1971 1971 Alan Shugart &IBM The "Floppy" Disk Nicknamed the "Floppy" for its flexibility. 1971 1973 Robert Metcalfe & Xerox 1973

11. 1974/75 The Ethernet Computer Networking 1974/75 1976/77 Scelbi & Mark-8 Altair & IBM 5100 Computers The first consumer computers. 1976/77 1978 Apple I, II & TRS-80 & Commodore Pet Computers More first consumer computers. 1978 1979 Dan Bricklin & Bob Frankston VisiCalc Spreadsheet Software Any product that pays for itself in two weeks is a surefire winner. 1979

12. 1981 Seymour Rubenstein & Rob Barnaby WordStar Software Word Processors. 1981 1981 IBM The IBM PC - Home Computer From an "Acorn" grows a personal computer revolution 1981 1983 Microsoft MS-DOS Computer Operating System From "Quick And Dirty" comes the operating system of the century. 1983

13. 1984 Apple Lisa Computer The first home computer with a GUI, 1984 graphical user interface. 1985 Apple Macintosh Computer The more affordable home computer with a GUI. 1985 1985 Microsoft Windows Microsoft begins the friendly war with Apple.

14. 1986 Compaq - first 80386-based microcomputer. 5000 hosts on the APRAnet/Internet. 1987 IBM and Microsoft announced PS/2 and OS/2. 10,000 hosts on the Internet. 1988 IBM AS/400 mid-range processor.

15. 1988 Oracle, Ingres - Unix-based DBMSs/4GLs. 1989 Telecom ISDN. 100,000 hosts on the Internet. 1989 DEC VAX 9000 - first mainframe VAX. 1990 IBM 3480 robot-based tape cartridge storage and retrieval system. 1990 AARNet.

16. 1990 IBM 3390 DASD = fastest biggest mainframe disk storage device. 20 GB, seek time 12.5 ms average, rotational delay 7.1 ms average. Data transfer 4.3 MB/s. 1990 ARPAnet is finally deinstalled after 20 years. Tim Berners-Lee creates the World Wide Web at CERN in Switzerland. 1992 1,000,000 hosts on the Internet.

17. 1993 Mosaic browser developed. The Web grows by 341,000 percent in a year. 1994 Netscape Communications founded. Java's first public demonstration. 1995 Microsoft's Windows 95 is launched. 1995 Architext changes its name to Excite.

18. IBM in 1924

19. IBM building Now