Lecture 2

an electronic device that takes data, process the data according to a series of instruction called program and produces information.

• Program

• Computer

considered as the 1st manual data processing device.

developed in China in 12th century A.D. • performs arithmetic calculations.

• ABACUS

• ABECUS

When PASCAL’S CALCULATOR invented

• 1645

• 1654

it utilized the same techniques for addition & subtraction as Pascal’s device but could also perform multiplication, division & square root

• PASCAL CAlCULATOR

• LEIBNIZ CALCULATOR

“first electronic digital purpose computer” or “Blank Berry Computer”.

• Grace Hopper

• John Atanasoff

ENIAC means?

• Electronics Numerical Integrator and Computer

• Electronics Numerical Intagretor and Computer

microprocessor chip

• Ted Hoff

• Ted Huff

making computers behave like humans

Games Playing, Expert Systems, Natural Language, Neural Networks, Robotics:

• SYSTEM

• ARTIFICIAL INTELLIGENCE (AI)

typically fits a desktop. Inside of it is microprocessor, which has control capability for memory and I/O access, and which contains an arithmetic logic unit all on a single, chip less than one quarter of an inch square.

• Minicomputers

• Microcomputers

computers that usually handle large volumes of data for input, perform simple calculations like addition and subtraction and print vast number of reports

• Scientific Computers

• Business Computers