History of Computing

History of Computing

Abacus – invented by the Chinese

3000 BC

History of Computing

• 1600s first use of the term computer

•19th Century, computers referred to machines performing calculation

Charles Babbage mechanical computer

1600 - 1832

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

1936

History of ComputingColossus - first electric programmable computer

Built during WWII to break enemy codes.

History of Computing

Harvard Mark I

• 15 meters long!• 2 to 6 seconds to add two numbers

1944

History of Computing

ENIAC

• it was about the size of a small gym

• capable of 5000 calculations per second

• initially built for the army

• used for predicting weather after the war

1946

History of ComputingUNIVAC

• capable of 8300 calculations per second

• first commercial computer

• first used for census tabulation

keyboard entry

magnetic tapes

1951

History of Computing

“Big Brother”

• capable of 16,000 calculations per second

• International Business Machines

• main memory holds 2048 words “tube”

1952

IBM 701 Machines

IBM 701 Processor

Individual tubes

History of Computing“Space Race” forced computers to become smaller

1950s to 1960s

History of Computing 1958 - 1971

1958 – invention of the Integrated Circuit (the “chip”)

1964 – the first mouse

1969 – ARPAnet – original internet

1971 – “floppy” disks

History of Computing 1971 - 1981

1971 – IBM 5100

First Consumer Computers

1976/77– Apple I & II 1979-1981 TRS-80

History of Computing 1980s and 1990s

More Personal Computers

History of ComputingMobile Computing

1980s and 1990s

History of ComputingEarly Tablets

History of ComputingComputing 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.

History of ComputingPortable Media Storage Comparison

2012 – average USB memory stick has 16 GB of memory

= 11,428 3.5” floppy disks or 22,222 5.25” floppy disks

History of Computing