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