Lesson 2 (Historical Background of ICT).pdf

LESSON II: Historical Background of ICT  Periods of ICT Development  Brief History of Computer  Early Developments in Electronic Data Processing  Computer Generations Evolution of ICT The beginning of ICT can be traced back when humans starte...

LESSON II: Historical Background of ICT  Periods of ICT Development  Brief History of Computer  Early Developments in Electronic Data Processing  Computer Generations Evolution of ICT The beginning of ICT can be traced back when humans started to use objects to communicate with one another. There are four main periods in history that divide the era of ICT, namely: 1.Pre-mechanical 2.Mechanical 3.Electromechanical 4.Electronic periods During this time, humans started communicating with one another using words and pictograms curved in rocks. Sumerian Pictogram- dating back 3100 BCE that shows the earliest form of communication among humans. Periods of ICT Development The Pre Mechanical Period It happened around 1450 BCE to 1450 CE. Humans started communicating with pictograms curved in rocks. Paper from papyrus plant was invented; storing of information was revolutionized. Paper were compiled and bound together, eventually giving birth to books. They needed to be compiled and stored in areas; hence libraries were created. “Libraries” were considered as the first data centers in history. Humans started using numerical system during the late stage of this period. The most popular device created in this period is said to have come from China- the abacus. The first device to process information. Periods of ICT Development The Mechanical Period Served as the bridge between our current period and the pre-mechanical period. It started around 1450-1840. The interest in automating and speeding up numerical calculations grew during this period. The machines are driven by mechanical means such as steam and gears dominated by information processing and calculation. The mechanical calculator, “Pascaline” was the highlight of this period. It was invented by the famous mathematician inventor Blaise Pascal along with Wilhelm Schickard. Charles Babbage’s Analytical Engine, which is considered as the first programmable mechanical computer, was also invented during this period.Charles Babbage- “Father of Computers” Periods of ICT Development The Electromechanical Period It started around 1840-1940. The use of electricity for information handling and transfer bloomed. This period saw the use of the telegraph to transmit information over long distances. The telephone was later invented, enabling voice transmission over long distances. Humans started to control electricity using vacuum tubes in devices that eventually led to the development of today’s electronic gadgets. Telegraph- considered as the first electrical communications device. First invented by in 1837 by William Cooke and Sir Charles Wheatstone, the first working model used five magnetic needles that could be pointed around set of letters and numbers by using electric current.  Samuel Morse, an American inventor, introduced the first single-circuit telegraph in 1844, which give rise to the Morse code. In 1876, Alexander Graham Bell was granted patent for the telephone. Periods of ICT Development The Electronic Period It started in the 1940’s up to present. The highlight of this period is focused on the advent of solid-state devices/electronic devices. There are four main event found in this period, these are: 1.The late vacuum tubes period; 2.The transistors period; 3.The integrated circuits period; and 4.The computer processors period. Electronic Numerical Integrator and Computer (ENIAC) - The first electronic general-purpose computer. It is around 167 square meters Its processing speed was slower than those machines used today. ✓The transistor was invented in 1947. It is an electronic device with properties and functions similar to vacuum tubes, but it is lightweight and faster. It is the foundation of every electronic device today. ✓The first full transistor computer was developed in 1957 and was faster than vacuum computers. ✓Jack Kilby was credited for introducing the integrated circuit in 1958. It is a device that is composed of transistors and circuit elements compressed in a single package. ✓ICs are used in processing devices, and processors are constructed in IC forms. Personal Computers then used these processors to deliver user applications. ✓Computers are evolving from basic textual interfaces to Graphical User Interfaces ✓The result of developed methods of connectivity for sharing processed information stored in computers and processing devices is the internet or the World Wide Web. ✓ICs are used in processing devices, and processors are constructed in IC forms. Personal Computers then used these processors to deliver user applications.  Brief History of Computer The earliest data processing equipment was all manual - mechanical devices due to the absence of electricity and adequate industrial technology. ABACUS A very old Abacus (300 B.C. by the Babylonians) The abacus was an early aid for mathematical computations. Its only value is that it aids the memory of the human performing the calculation. A more modern abacus  John Napier is best known as the inventor of logarithms. He also invented the so-called "Napier's bones" and made common the use of the decimal point in arithmetic and mathematics. Napier's birthplace, Merchiston Tower in Edinburgh, Scotland, is now part of the facilities of Edinburgh Napier University. After his death from the effects of John Napier gout, Napier's remains were buried in St Cuthbert's (1550 – 1617) Church, Edinburgh. In 1617 John Napier invented logarithms, which are a technology that allows multiplication to be performed via addition. The magic ingredient is the logarithm of each operand, which was originally obtained from a printed table. But Napier also invented an alternative to tables, where the logarithm values were carved on ivory sticks. NAPIER'S BONES William Oughtred and others developed the slide rule in the 17th century based on the emerging work on logarithms by John Napier. Slide Rule In 1642 Blaise Pascal, at the age of 19, he invented the Pascaline as an aid for his father who was a tax collector. Pascal built 50 of this gear-driven one- function calculator (it could only add) but couldn't sell many because of their exorbitant cost and because they really weren't that accurate (at that time it was not possible to fabricate gears with the required precision). It can be called “Arithmatique Machine” The first calculator or adding machine to be produced in any quantity and actually used. Pascaline or Pascal Calculator   A German mathematician and philosopher. He occupies a prominent place in the history of mathematics and the history of philosophy.  The Step Reckoner (or Stepped Reckoner) was a digital mechanical calculator invented around 1672 and completed in 1694. Gottfried Wilhelm Leibniz (July 1, 1646 – November 14, 1716) Step Reckoner A French weaver and merchant. He played an important role in the development of the earliest programmable loom (the "Jacquard loom"), which in turn played an important role in the development of other programmable machines, such as computers. Joseph Marie Jacquard (7 July 1752 – 7 August 1834) Jacquard's Loom showing the threads and the punched cards. By selecting particular cards for Jacquard's loom you defined the woven pattern A mechanical loom, invented by Joseph Marie Jacquard, first demonstrated in 1801, that simplifies the process of manufacturing textiles with complex patterns such as brocade, damask and matelasse. The loom was controlled by a "chain of cards", a number of punched cards, laced together into a continuous sequence.  By 1822 the English mathematician Charles Babbage was proposing a steam-driven calculating machine the size of a room, which he called the Differential Engine. This machine would be able to compute tables of numbers, such as logarithm tables. Charles Babbage (26 December 1791 – 18 October 1871) Babbage’s Differential Engine  The Analytical Engine It was a proposed mechanical general-purpose computer designed by English mathematician Charles Babbage. Babbage’s Analytical Engine 2 main parts: the “Store” where numbers are held and the “Mill” where they were woven into new results  English mathematician and writer knew for her work on Charles Babbage's early mechanical general-purpose computer, the Analytical Engine. Her notes on the engine include what is recognized as the first Algorithm intended to be processed by a machine. Because of this, she is often described as the world's first computer programmer. Referred to as the “First Programmer” Ada Lovelace Augusta Ada Byron, Lady Lovelace (10 December 1815 – 27 November 1852)  Herman Hollerith (February 29, 1860 – November 17, 1929) An American statistician and inventor developed a mechanical tabulator based on punched cards to rapidly tabulate statistics from millions of pieces of data. He was the founder of the Tabulating Machine Company that later merged to become IBM. Hollerith is widely regarded as the father of modern automatic computation.  Hollerith Machine The first automatic data processing system. It was used to count the 1890 U.S. census. Developed by Herman Hollerith, a statistician who had worked for the Census Bureau, the system used a hand punch to record the data as holes in dollar- bill-sized punch cards and a tabulating machine to count them. The tabulating machine contained Hollerith Machine a spring-loaded pin for each potential hole in the card. When a card was placed in the reader and the handle was pushed down, the pins that The beginning of data processing made in August 30, 1890 cover of Scientific American. The binary concept.  Official name was Automatic Sequence Controlled Calculator. Could perform the 4 basic arithmetic operations. Mark I Howard Aiken  developed by John Presper Eckert Jr. and John Mauchly 1st large-scale vacuum-tube computer EDVAC Electronic Discrete Variable Automatic Computer  Developed by John Von Neumann a modified version of the ENIAC employed binary arithmetic has stored program capability EDSAC Electronic Delay Storage Automatic Calculator  built by Maurice Wilkes during the year 1949 one of the first stored-program machine computers and one of the first to use binary digits UNIVAC Universal Automatic Computer  Developed by George Gray in Remington Rand Corp. Manufactured as the first commercially available first- generation computer. IBM International Business Machines By 1960, IBM was the dominant force in the market of large mainframe computers. IBM 701 IBM’s 1st commercial business computer  FIRST GENERATION (1946-1959) Vacuum tube based The use vacuum tubes in place of relays as a means of storing data in memory and the use of the stored‐program concept. It requires 3.5 KW of electricity per day to keep the vacuum tubes running Per Day : Generation in computer terminology is a change in technology a computer is/was being used. Initially, the generation term was used to distinguish between varying hardware technologies. But nowadays, generation includes both hardware and software, which together make up an entire computer system. WHO INVENT THE VACUUM TUBES? First invented by a British scientist named John A. Fleming in 1919, although Edison had made some discoveries while working on the lightbulb. The vacuum tube was improved by Lee DeForest. The main features of First Generation are: Vacuum tube technology Unreliable Supported Machine language only Very costly Generate lot of heat Slow Input/Output device Huge size Need of A.C. Non-portable Consumed lot of electricity Some computers of this generation were: ENIAC EDVAC UNIVAC IBM-701 SECOND GENERATION (1959-1965) This generation using the transistor was cheaper, (1959-1965) consumed less power, and was more compact in size, more reliable, and faster than the first generation machines made of vacuum tubes. In this generation, magnetic cores were used as primary memory and magnetic tape and magnetic disks as secondary storage devices. WHO INVENTED THE TRANSISTORS? The first transistor was invented at Bell Laboratories on December 16, 1947 by William Shockley (seated at Brattain's laboratory bench), John Bardeen (left) and Walter Brattain (right). First Transistor The main features of Second Generation are: Use of transistors Reliable as compared to First generation computers Smaller size as compared to First generation computers Generate less heat as compared to First generation computers Consumed less electricity as compared to First generation computers Faster than first-generation computers Still very costly A.C. needed Support machine and assembly languages Some computers of this generation were: IBM 1620 IBM 7094 CDC 1604 CDC 3600 UNIVAC 1108 THIRD GENERATION (1965-1971) Integrated Circuits (IC's) in place of transistors A single IC has many transistors, resistors and capacitors along with the associated circuitry. Integrated solid‐state circuitry, improved secondary storage devices and new input/output devices were the most important advances in this generation.  Consumed lesser electricity Support high-level language WHO INVENT THE IC? The main features of the Third Generation are: IC used More reliable Smaller size Generate less heat Faster Lesser maintenance The idea of integrating electronic circuits into a Still costly single device was born, when the German physicist A.C. needed and engineer Werner Jacobi (de).  FOURTH GENERATION (1971-1980) Very-large-scale integration (VLSI) VLSI circuits having about 5000 transistors and other circuit elements and their associated circuits on a single chip made it possible to have microcomputers of the fourth generation. Referred to as microprocessors are utilized in this generation. A microprocessor chip is made from hundreds of Integrated Circuits construct on a single silicon chip.  Fourth Generation computers became more powerful, compact, reliable, and affordable. As a result, it gave rise to the personal computer (PC) revolution. In this generation, Remote processing, Time-sharing, Real-time, Multi- programming Operating System were used. All the higher-level languages like C and C++, DBASE, etc., were used in this generation. The main features of the Fourth Generation are: VLSI technology used Very cheap Portable and reliable Use of PC's Very small size Pipeline processing No A.C. needed  In this generation, Remote processing, Time-sharing, Real-time, Multi- programming Operating System were used. All the higher-level languages like C and C++, DBASE, etc., were used in this generation. The main features of the Fourth Generation are: VLSI technology used Concept of the internet was introduced Very cheap Great developments in the fields of networks Portable and reliable Computers became easily available Use of PC's Very small size Pipeline processing No A.C. needed DEC 10 PDP 11 STAR 1000  FIFTH GENERATION Present and Beyond: Artificial Intelligence Artificial Intelligence is the branch of computer science concerned with making computers behave like humans. The term was coined in 1956 by John McCarthy at the Massachusetts Institute of Technology. Artificial intelligence includes: Games Playing – programming computers to play games such as chess and checkers. Expert Systems – programming computers to make decisions in real-life situations (for example, some expert systems help doctors diagnose diseases based on symptoms) Natural Language – programming computers to understand natural human languages Neural Networks – Systems that simulate intelligence by attempting to reproduce the types of physical connections that occur in animal brains Robotics – programming computers to see and hear and react to other sensory stimuli  Evolution of Computers COMPUTER GENERATIONS ✓First generation (1940-1956) ✓Second generation (1956-1963) ✓Third generation (1964-1971) ✓Fourth generation (1971- present) ✓Fifth generation (present & beyond) https://www.slideshare.net/mentosrenz27/historical-background-of-ict Thank you!!