1. History of Computing

2. 3000 BC
History of Computing
Abacus – invented by the Chinese

3. History of Computing 1600 - 1832 1600s first use of the term computer
19th Century, computers referred to machines performing calculation
Charles Babbage mechanical computer

4. 1936
History of Computing
Z1, first electronic/mechanical computer designed and constructed by Konrad Zuse
Two years to build – by one person!
First to use BINARY code to program

5. History of Computing Colossus - first electric programmable computer
Built during WWII to break enemy codes.

6. History of Computing 1944 Harvard Mark I 15 meters long!
2 to 6 seconds to add two numbers 
Harvard Mark I

7. History of Computing 1946 ENIAC initially built for the army
it was about the size of a small gym
capable of 5000 calculations per second
used for predicting weather after the war

8. History of Computing 1951 UNIVAC magnetic tapes
first commercial computer
capable of 8300 calculations per second
first used for census tabulation
keyboard entry

9. History of Computing 1952 “Big Brother” IBM 701 Machines
International Business Machines
capable of 16,000 calculations per second
main memory holds 2048 words “tube”
IBM 701 Processor
Individual tubes

10. History of Computing 1950s to 1960s
“Space Race” forced computers to become smaller

11.
History of Computing
1958 – invention of the Integrated Circuit (the “chip”)
1964 – the first mouse
1969 – ARPAnet – original internet
1971 – “floppy” disks

12. First Consumer Computers
History of Computing
First Consumer Computers
1971 – IBM 5100
1976/77– Apple I & II
TRS-80

13. More Personal Computers
1980s and 1990s
History of Computing
More Personal Computers

14. 1980s and 1990s
History of Computing
Mobile Computing

15. History of Computing
Early Tablets

16. Computing Speeds – then and now
History of Computing
Computing Speeds – then and now
1944 – 2 to 6 seconds to add two numbers
2012 – 177,730,000,000 instructions per second (home computer)
2012 – 27,000,000,000,000,000 instructions per second (Titan Supercomputer)
In one hour, the Titan computer will do as much work as a home computer can do in 20 years.

17. Portable Media Storage Comparison
History of Computing
Portable Media Storage Comparison
2012 – average USB memory stick has 16 GB of memory
= 11, ” floppy disks or 22, ” floppy disks

18. History of Computing