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OVERVIEW OF COMPUTERS & ICT (HISTORY & EVOLUTION (THE ELECTRONIC…
OVERVIEW OF COMPUTERS & ICT
HISTORY & EVOLUTION
THE PRE-MECHANICAL AGE (3000BC-1450AD)
USE VERBAL COMMUNICATION
EG: PETROGLYPHS, EGYPTIAN WALL DRAWINGS
USE MANUAL CALCULATORS TO KEEP TRACK OF QUANTITIES AND PERFORM SIMPLE CALCULATION
THE MECHANICAL AGE (1450AD - 1840AD)
EG: THE PASCALINE, SCHICKARD'S CALCULATOR
CHARLES BABBAGE : AN ENGLISH MATHEMATICIAN
THE ELECTRO-MECHANICAL AGE (1840-1940)
TELECOMMUNICATION FIELD
ENIAC : ELECTRONIC NUMERICAL INTEGRATOR AND COMPUTER (1943)
UNIVAC : UNIVERSAL AUTOMATIC COMPUTER (1951)
THE ELECTRONIC AGE (1940-PRESENT)
1976 - THE FIRST APPLE COMPUTER
1998- GOOGLE & iMAC
2001 - WIKIPEDIA &FIRST IPOD
2004 - FACEBOOK
2008 - CHROME
1994 - YAHOO!
2005- YOUTUBE
2013- QR CODE BECOME POPULAR
2016- OCULUS RIFT & POKEMON GO
COMPUTERS & ICT IN EVERYDAY LIFE
EDUCATION
SCIENCE AND RESEARCH
BUSINESS
ENTERTAINMENT
DIGITAL DATA REPRESENTATION
BINARY NUMBER SYSTEM
0&1 (BINARY DIGITS/ BITS)
1- JALAN / 0- STOP
BITS AND BYTES
BITS IS THE SMALLEST UNIT (SHIRT FOR BINARY DIGIT
BYTE : A GROUP OF 8 BITS
KILOBYTES &MEGABYTES USED TO REFER TO SIZES OF COMPUTER FILES
LARGER PREFIX SIZES (GIGA, TERA, PETA) : REFER TO STORAGE CAPACITY
THE FORM IN WHICH DIGITAL DATA IS STORED, PROCESSED AND TRANSMITTED IS REFERRED TO..