extended english first_chapter_computer_and_history_of_computer
TRANSCRIPT
COURSE ঃ� COMPUTER EDUCATION (GRADE 9 AND 10 , BANGLADESH)
UNDERSTANDING COMPUTERS HISTORY OF COMPUTERS
Sayed Ahmed (Computer Engineering, BUET, Bangladesh)MSc., Computer Science, CanadaSoftware Engineer/Developer, Canadahttp://www.JustEtc.net http://www.justetc.orgJust et cetera TechnologiesJust Et Cetera Social Services
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NOTE This is an English translation of a
presentation documentation provided by me in Bengali language
In this English translation: I will provide the same information but
briefly
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FIRST CHAPTER: COMPUTERS, AND HISTORY OF COMPUTERS
What is a computer? Features of Computers Computers vs. other electronic devices Types of computers and their features
(size-based) Classification of computers Hardware and software of computers
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HISTORY OF COMPUTERS Old computing machine– Abacus First era of computing Electro mechanical era Electronics era
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GENERATIONS OF COMPUTERS Generations of Computers
First Generation (1946 - 59) 2nd Generation (1959-65) Third Generation (1965-71) Fourth generation (1971 – Present) Fifth Generation (the future)
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WHAT IS A COMPUTER Learn from the Internet
What is a Computer? Modern Computers Defined
A Definition A computer is an electronic device which is
capable of receiving information (data) in a particular form and of performing a sequence of operations in accordance with a predetermined but variable set of procedural instructions (program) to produce a result in the form of information or signals.
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WHAT IS A COMPUTER ? Another definition
A computer is a programmable machine. The two principal characteristics of a computer are: it responds to a specific set of instructions in a well-defined manner and it can execute a prerecorded list of instructions (a program).
Ref: http://www.webopedia.com/TERM/C/computer.html
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WHAT IS A COMPUTER ?
Definition according to Bangladesh copyright law Computers indicate to any systems that
use mechanical, electro-mechanical, electronic, magnetic, electro-magnetic, digital, optical or other forms of impulse/signal/data to perform logical, or mathematical operations/tasks
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ORIGIN OF THE TERM COMPUTER The term Computer was originated from the
term Compute. The term compute means: calculate, measure, count, or conceptualize. The term compute was originated between 1375 and 1425.
According to these terminologies whoever (machine or human) does the operations such as calculation, measurement, counting, or conceptualization can be called a computer.
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NATURE OF COMPUTER TASKS
Learn from the Internet The Characteristics of Computers
Speed, accuracy, versatility, Reliability, Power of remembering, No I.Q, Common data used, Diligence, Storage
Primary characteristics of how computer works
Fast Accurate Can store instructions and use those instructions
to work at a later time
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COMPUTERS VS OTHER ELECTRONIC DEVICES
Other electronic devices can do only one task; however computers can do many different tasks as programmed Using radio you can just listen to their programs Using TV you can watch their programs VCD players play VCDs A Calculator just calculates A fax machine just sends or receives faxes A Computer can do all of the above tasks A computer can do way more
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COMPUTERS VS OTHER ELECTRONIC DEVICES
Learn from the Internet Difference between computer and electronic devic
es Difference between electronic and electrical devic
es Mobile Phones vs. Computers as device for
education in Bangladesh: Mobile
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HOW DOES A COMPUTER WORK Learn from the Internet
How Computers Work: Input and Output Computer Systems
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CLASSIFICATION OF COMPUTERS: BASED ON HOW A COMPUTER WORKS
Learn from the internet Definition of analog, digital, and hybrid-co
mputers
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COMPUTER CLASSIFICATION, BY SIZE AND POWER http://www.webopedia.com/TERM/C/computer
.html
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COMPUTER HARDWARE AND SOFTWARE
Learn from the Internet Computer Hardware Computer Software
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GENERATIONS OF COMPUTERS Learn from the Internet
The Five Generations of Computers Brief Timeline of the Internet
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ERA OF COMPUTERS Learn from the Internet
Era of Computers
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OTHERS Evolution of Apple products
Evolution of Apple products : In Bengali; However, the key terms are in English
Evolution of Software History of software engineering: Related to
your curricula
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HISTORY OF COMPUTER USAGE IN BANGLADESH
Bangladesh started using Computers in the 60’s The first computer was placed on 1964 at Atomic Energy
Commission – IBM 1620, RAM:20 KB, Later Increased to 64KB The scientists at Atomic Energy Commission and the
students of the Dhaka University used this computer Atomic energy commission placed another computer at Savar
location on 1982-83: IBM Mainframe 4341 The second computer was placed on 1965 at Adomjee Jute
Mills, IBM – 1400 series Later United Bank (Janata Bank) used IBM-1900 series After liberation, Bureau of Statistics used IBM 360 series BUET used IBM – 370, and IBM 4300 series computers on
1978-79
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HISTORY OF COMPUTER USAGE IN BANGLADESH
Computers became popular in Bangladesh with the introduction of micro computers i.e. Desktop Computers
On 1982-83, IBM PC Compatible and Apple computers got popularity in Bangladesh
Macintosh computers came to Bangladesh on 1985-86 On 16th may, 1987 the first digital magazine was
published in Bangladesh : Anondo Potro Afterwards, Macintosh was used increasingly in the publishing
industry Also, the use of IBM PC or Compatibles are increasingly
used in personal and official purpose On 1998-99 tax/vat were removed on computers; that
helped to increase the use of computers in Bangladesh
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NEXT STEP Improve this presentation document Provide a lecture video on this May provide quizzes in the web-site or
through a Facebook application on this chapter
Will see if it can be provided: mobile customized version of the quiz application
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OUR VIDEO TRAINING WEB-SITES
In Bengali: http://Bangla.SaLearningSchool.com http://Blog. SaLearningSchool.com
In English: http://www.SaLearningSchool.com http://English.SaLearningSchool.com http://www.SitesTree.com
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OUR TRAINING VIDEO WEB-SITES
Training in Bengali/Bangla: http://Bangla.SaLearningSchool.com http://Blog. SaLearningSchool.com
Training in English: http://www.SaLearningSchool.com http://English.SaLearningSchool.com http://www.SitesTree.com
