Presentation is loading. Please wait.

Presentation is loading. Please wait.

KEYBOARD – an input device used to type data.

Similar presentations


Presentation on theme: "KEYBOARD – an input device used to type data."— Presentation transcript:

1 KEYBOARD – an input device used to type data.
PARTS OF COMPUTER KEYBOARD – an input device used to type data.

2 MONITOR – an output device used to show the images, on the desktop.
PARTS OF COMPUTER MONITOR – an output device used to show the images, on the desktop. CRT MONITOR LED MONITOR

3 PARTS OF COMPUTER MOUSE

4 PARTS OF COMPUTER MICROPHONE

5 PARTS OF COMPUTER WEBCAM

6 PARTS OF COMPUTER SPEAKER

7 BRIEF HISTORY OF COMPUTER
ANCIENT COUNTING MACHINE (ABACUS) - consist of sliding beads on frame used for counters. - originally used in ancient Babylon, China and Europe. CHINESE MERCHANTS

8 BRIEF HISTORY OF COMPUTER
THE PASCALINE - it could perform addition and subtraction of numbers. - developed by Blaise Pascal, a french philisopher and mathematician. BLAISE PASCAL

9 BRIEF HISTORY OF COMPUTER GOTTFRIED WILHELM LEIBNITZ
STEPPED RECKONER - can also perform multiplication, division and extracttion of roots. - invented by GOTTFRIED WILHELM VON LEIBNITZ, a famous mathematician. GOTTFRIED WILHELM LEIBNITZ

10 BRIEF HISTORY OF COMPUTER
THE PUNCHED CARD - consist of holes that can store information - invented by JOSEPH JACQUARD JOSEPHM MARIE JACQUARD

11 BRIEF HISTORY OF COMPUTER
DIFFERENCE ENGINE - calculate huge numbers and produce table of numbers to help ship’s navigation. - designed by CHARLES BABBAGE, the “Father of Modern Computer” CHARLES BABBAGE

12 BRIEF HISTORY OF COMPUTER
ANALYTICAL ENGINE - difference engine was not successful. - Charles Babbage developed this, a more advanced machine with the help of Ada Lovelace CHARLES BABBAGE

13 ELECTRONIC TABULATING MACHINE
HOLLERITH MACHINE - used for calculation of census data. - invented by Herman Hollerith. - formed a company to sold his invention known as International Business Machine (IBM). HERMAN HOLLERITH

14 ELECTRONIC TABULATING MACHINE
MARK I - used mechanical telephone relay switches to store information and processed data on punched cards. - developed by Howard Aiken with a team from IBM HOWARD AIKEN

15 ELECTRONIC TABULATING MACHINE
ATANASOFF BERRY COMPUTER - uses vacuum tubes for storage, arithmetic , and logical functions. - invented by John Vincent Atanasoff JOHN VINCENT ATANASOFF

16 ELECTRONIC TABULATING MACHINE
ELECTRONIC NUMERICAL INTEGRATOR AND CALCULATOR (ENIAC) - the first electronic computer which could perform high speed calculations and could make decisions. - invented byJohn Mauchly and J. Presper Eckert JOHN MAUCHLY & J. PRESPER ECKERT

17 THE STORED COMPUTER ELECTRONIC DISCRETE VARIABLE AUTOMATIC COMPUTER (EDVAC) - store computer instructions and data in a CPU. - it has the capacity to perform 1,000 calculations/second. JOHN VON NEUMANN

18 THE STORED COMPUTER ELECTRONICDELAY STORAGE AUTOMATIC COMPUTER (EDSAC)
- store computer instructions and data in a CPU. - it has the capacity to perform 1,000 calculations/second. JOHN VON NEUMANN

19 THE VACUUM TUBE - produce a lot of heat as they have a filament like a light bulb - used in the first computers like the ENIAC, which demanded lots of maintenance because of the heat produced. - John Ambrose Fleming invented the first vacuum tube (1904) - Lee De Forest created the "audion"(1906) Atanasoff–Berry Computer ENIAC EDSAC Mark 1 EDVAC IBM 650 UNIVAC

20 THE TRANSISTOR (TRANSfer resISTOR)
- invented at Bell Laboratories on December 16, 1947 by William Shockley. - the most important electronics event of the 20th century - device designed to act as both transmitter, which converts sound waves into electronic waves, and a resistor, which controls electronic current.

21 THE INTEGRATED CIRCUITS
- developed in 1961 BY Jack Kilby - combined many transistors and other electrical components onto a small silicon chip.

22 THE MICROPROCESSORS - tiny integrated circuits that contain millions of transistors


Download ppt "KEYBOARD – an input device used to type data."

Similar presentations


Ads by Google