INPUT DEVICES. KEYBOARD Most common input device for a computer.
PARTS OF COMPUTER KEYBOARD – an input device used to type data.
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Transcript of PARTS OF COMPUTER KEYBOARD – an input device used to type data.
PARTS OF COMPUTERKEYBOARD – an input device used to type data.
PARTS OF COMPUTERMONITOR – an output device used to
show the images, on the desktop.
CRT MONITOR LED MONITOR
PARTS OF COMPUTERMOUSE
PARTS OF COMPUTER
MICROPHONE
PARTS OF COMPUTERWEBCAM
PARTS OF COMPUTERSPEAKER
BRIEF HISTORY OF COMPUTERANCIENT COUNTING MACHINE
(ABACUS)- consist of sliding beads on frame used for
counters.- originally used in ancient Babylon, China
and Europe.
CHINESE MERCHANTS
BRIEF HISTORY OF COMPUTERTHE PASCALINE
- it could perform addition and subtraction of numbers.
- developed by Blaise Pascal, a french philisopher and mathematician.
BLAISE PASCAL
BRIEF HISTORY OF COMPUTERSTEPPED RECKONER
- can also perform multiplication, division and extracttion of roots.
- invented by GOTTFRIED WILHELM VON LEIBNITZ, a famous mathematician.
GOTTFRIED WILHELM LEIBNITZ
BRIEF HISTORY OF COMPUTERTHE PUNCHED CARD
- consist of holes that can store information
- invented by JOSEPH JACQUARD
JOSEPHM MARIE JACQUARD
BRIEF HISTORY OF COMPUTERDIFFERENCE 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
BRIEF HISTORY OF COMPUTERANALYTICAL ENGINE
- difference engine was not successful.- Charles Babbage developed this, a more
advanced machine with the help of Ada Lovelace
CHARLES BABBAGE
ELECTRONIC TABULATING MACHINEHOLLERITH 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
ELECTRONIC TABULATING MACHINEMARK 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
ELECTRONIC TABULATING MACHINEATANASOFF BERRY COMPUTER
- uses vacuum tubes for storage, arithmetic , and logical functions.
- invented by John Vincent Atanasoff
JOHN VINCENT ATANASOFF
ELECTRONIC TABULATING MACHINEELECTRONIC 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
THE STORED COMPUTERELECTRONIC 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
THE STORED COMPUTERELECTRONICDELAY 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
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)1. Atanasoff–Berry Computer
2. ENIAC3. EDSAC4. Mark 15. EDVAC6. IBM 6507. UNIVAC
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.
THE INTEGRATED CIRCUITS- developed in 1961 BY Jack Kilby- combined many transistors and other electrical
components onto a small silicon chip.
THE MICROPROCESSORS- tiny integrated circuits that contain millions of
transistors