Module-2-History-of-Computer-Basic-Computing-Periods (1).pdf

LIVING IN THE IT ERA 08/01/2021 MODULE 2: HISTORY OF COMPUTER: BASIC COMPUTING PERIODS Objectives: At the end of the chapter, students must be able to: Gain familiarity of the different discoveries during th...

LIVING IN THE IT ERA 08/01/2021 MODULE 2: HISTORY OF COMPUTER: BASIC COMPUTING PERIODS Objectives: At the end of the chapter, students must be able to: Gain familiarity of the different discoveries during the different periods. Learn different inventions and discoveries during electro-mechanical age that lead to the inventions of today’s technology. Identify different technologies and their improvements during the different generations. Definition of Computer Computer is a programmable machine. Computer is an electronic device that manipulates information, or data. It has the ability to store, retrieve, and process data. Computer is a machine that manipulates data according to a list of instructions (program). Computer is any device which aids humans in performing various kinds of computations or calculations. Three principal characteristics of computer: It responds to a specific set of instructions in a well-defined manner. It can execute a pre-recorded list of instructions. It can quickly store and retrieve large amounts of data. Applications of ICT (Computers) in Our Daily Lives 1. Business. Almost every business uses computers nowadays. They can be employed to store and maintain accounts, personnel records, manage projects, track inventory, create presentations and reports. They enable communication with people both within and outside the business, using various technologies, including e-mail. They can be used to promote the business and enable direct interaction with customers. 2. Education. Computers can be used to give learners audio-visual packages, interactive exercises, and remote learning, including tutoring over the internet. They can be used to access educational information from intranet and internet sources, or via e-books. They can be used to maintain and monitor student performance, including through the use of online examinations, as well as to create projects and assignments. 3. Healthcare. Healthcare continues to be revolutionized by computers. As well as digitized medical information making it easier to store and access patient data, complex information can also be analyzed by software to aid discovery of diagnoses, as well as search for risks of diseases. Computers control lab Page 1 of 9  LIVING IN THE IT ERA 08/01/2021 equipment, heart rate monitors, and blood pressure monitors. They enable doctors to have greater access to information on the latest drugs, as well as the ability to share information on diseases with other medical specialists. 4. Retail and Trade. Computers can be used to buy and sell products online - this enables sellers to reach a wider market with low overheads, and buyers to compare prices, read reviews, and choose delivery preferences. They can be used for direct trading and advertising too, using sites such as eBay, Craigslist, or local listings on social media or independent websites. 5. Government. Various government departments use computers to improve the quality and efficiency of their services. Examples include city planning, law enforcement, traffic, and tourism. Computers can be used to store inf ormation, promote services, communicate internally and externally, as well as for routine administrative purposes 6. Marketing. Computers enable marketing campaigns to be more precise through the analysis and manipulation of data. They facilitate the creation of websites and promotional materials. They can be used to generate social media campaigns. They enable direct communication with customers through email and online chat. 7. Science. Scientists were one of the first groups to adopt computers as a work tool. In science, computers can be used for research, sharing information with other specialists both locally and internationally, as well as collecting, categorizing, analyzing, and storing data. Computers also play a vital role in launching, controlling, and maintaining space craft, as well as operating other advanced technology. 8. Publishing. Computers can be used to design pretty much any type of publication. These might include newsletters, marketing materials, fashion magazines, novels, or newspapers. Computers are used in the publishing of both hard-copy and e-books. They are also used to market publications and track sales. 9. Arts and Entertainment. Computers are now used in virtually every branch of the arts, as well as in the wider entertainment industry. Computers can be used to create drawings, graphic designs, and paintings. They can be used to edit, copy, send, and print photographs. They can be used by writers to create and edit. They can be used to make, record, edit, play, and listen to music. They can be used to capture, edit and watch videos. They can be used for playing games. 10. Communication. Computers have made real-time communication over the internet easy, thanks to software and videoconferencing services such as Skype. Families can connect with audio and video, businesses can hold meetings between remote participants, and news organizations can interview people without the need for a film crew. Modern computers usually have microphones and webcams built-in nowadays to facilitate software like Skype. Older communications technologies such as email are also still used widely. 11. Banking and Finance. Most banking in advanced countries now takes place online. You can use computers to check your account balance, transfer money, or pay off credit cards. You can also use computer technology to access Page 2 of 9  LIVING IN THE IT ERA 08/01/2021 information on stock markets, trade stocks, and manage investments. Banks store customer account data, as well as detailed information on customer behavior which is used to streamline marketing. 12. Transport. Road vehicles, trains, planes, and boats are increasingly automated with computers being used to maintain safety and navigation systems, and increasingly to drive, fly, or steer. They can also highlight problems that require attention, such as low fuel levels, oil changes, or a failing mechanical part. Computers can be used to customize settings for individuals, for example, seat setup, air-conditioning temperatures. 13. Navigation. Navigation has become increasingly computerized, especially since computer technology has been combined with GPS technology. Computers combined with satellites mean that it's now easy to pinpoint your exact location, know which way that you are moving on a map, and have a good idea of amenities and places of interest around you. 14. Working From Home. Computers have made working from home and other forms of remote working increasingly common. Workers can access necessary data, communicate, and share information without commuting to a traditional office. Managers are able to monitor workers' productivity remotely. 15. Military. Computers are used extensively by the military. They are use for training purposes. They are used for analyzing intelligence data. They are used to control smart technology, such as guided missiles and drones, as well as for tracking incoming missiles and destroying them. They work with other technologies such as satellites to provide geospatial information and analysis. They aid communications. They help tanks and planes to target enemy forces. 16. Social and Romance. Computers have opened up many ways of socializing that didn't previously exist. Social media enables people to chat in text or audio in real time across large distances, as well as exchange photographs, videos, and memes. Dating sites and apps help people to find romance. Online groups help people to connect with others who have similar interests. Blogs enable people to post a variety of views, updates, and experiences. Online forums enable discussions between people on specialist or general topics. 17. Booking Vacations. Computers can be used by travelers to study timetables, examine route options, and buy plane, train, or bus tickets. They can be used to explore and book accommodation, whether traditional hotels, or through newer services, such as Air BnB. Guided tours, excursions, events, and trips can also be explored and booked online using computers. 18. Security and Surveillance. Computers are increasingly being combined with other technologies to monitor people and goods. Computers combined with biometric passports make it harder for people to fraudulently enter a country or gain access to a passenger airplane. Face-recognition technology makes it easier to identify terrorists or criminals in public places. Driver plates can be auto scanned by speed cameras or police cars. Private security systems have also become much more sophisticated with the introduction of computer technology and internet technology. 19. Weather Forecasting. The world's weather is complex and depends upon a multitude of factors that are constantly changing. It's impossible for human Page 3 of 9  LIVING IN THE IT ERA 08/01/2021 beings to monitor and process all the information coming in from satellite and other technologies, never mind perform the complex calculations that are needed to predict what is likely to happen in the future. Computers can process the large amounts of meteorological information. 20. Robotics. Robotics is an expanding area of technology which combines computers with science and engineering to produce machines that can either replace humans, or do specific jobs that humans are unable to do. One of the first use of robotics was in manufacturing to build cars. Since then, robots have been developed to explore areas where conditions are too harsh for humans, to help law enforcement, to help the military, and to assist healthcare professionals. History of Computer: Basic Computing Periods Earliest Computers originally calculations were computed by humans, whose job title was computers. These human computers were typically engaged in the calcu lation of a mathematical expression. The calculations of this period were specialized and expensive, requiring years of training in mathematics. The first use of the word "computer" was recorded in 1613, referring to a person who carried out calculations, or computations, and the word continued to be used in that sense until the middle of the 20th century. a) Tally sticks. A tally stick was an ancient memory aid device to record and document numbers, quantities, or even messages. b) Abacus. An abacus is a mechanical device used to aid an individual in performing mathematical calculations. The abacus was invented in Babylonia in 2400 B.C. The abacus in the form we are most familiar with was first used in China in around 500 B.C. It used to perform basic arithmetic operations. c) Napier’s Bones Invented by John Napier in 1614. Allowed the operator to multiply, divide and calculate square and cube roots by moving the rods around and placing them in specially constructed boards. d) Slide Rule Invented by William Oughtred in 1622. Is based on Napier's ideas about logarithms. Used primarily for – multiplication – division – roots – logarithms – Trigonometry Not normally used for addition or subtraction. e) Pascaline Invented by Blaise Pascal in 1642. It was its limitation to addition and subtraction. It is too expensive. Page 4 of 9  LIVING IN THE IT ERA 08/01/2021 f) Stepped Reckoner Invented by Gottfried Wilhelm Leibniz in 1672. The machine that can add, subtract, multiply and divide automatically. g) Jacquard Loom The Jacquard loom is a mechanical loom, invented by Joseph - Marie Jacquard in 1881. It is an automatic loom controlled by punched cards. h) Arithmometer A mechanical calculator invented by Thomas de Colmar in 1820, The first reliable, useful and commercially successful calculating machine. The machine could perform the four basic mathematic fu nctions. The first mass-produced calculating machine. i) Difference Engine and Analytical Engine It an automatic, mechanical calculator designed to tabulate polynomial functions. Invented by Charles Babbage in 1822 and 1834 It is the first mechanical computer. j. First Computer Programmer In 1840, Augusta Ada Byron suggests to Babbage that he use the binary system. She writes programs for the Analytical Engine. k. Scheutzian Calculation Engine Invented by Per Georg Scheutz in 1843. Based on Charles Babbage's difference engine. The first printing calculator. l. Tabulating Machine Invented by Herman Hollerith in 1890. To assist in summarizing information and accounting. m. Harvard Mark 1 Also known as IBM Automatic Sequence Controlled Calculator (ASCC). Invented by Howard H. Aiken in 1943 The first electro-mechanical computer. n. Z1 The first programmable computer. Created by Konrad Zuse in Germany from 1936 to 1938. To program the Z1 required that the user insert punch tape into a punch tape reader and all output was also generated through punch tape. o. Atanasoff-Berry Computer (ABC) It was the first electronic digital computing device. Invented by Professor John Atanasoff and graduate student Clifford Berry at Iowa State University between 1939 and 1942. Page 5 of 9  LIVING IN THE IT ERA 08/01/2021 p. ENIAC ENIAC stands for Electronic Numerical Integrator and Computer. It was the first electronic general-purpose computer. Completed in 1946. Developed by John Presper Eckert and John Mauchly. q. UNIVAC 1 The UNIVAC I (UNIVersal Automatic Computer 1) was the first commercial computer. Designed by John Presper Eckert and John Mauchly. r. EDVAC EDVAC stands for Electronic Discrete Variable Automatic Computer The First Stored Program Computer Designed by Von Neumann in 1952. It has a memory to hold both a stored program as well as data. s. The First Portable Computer Osborne 1 – the first portable computer. Released in 1981 by the Osborne Computer Corporation. t. The First Computer Company The first computer company was the Electronic Controls Company. Founded in 1949 by John Presper Eckert and John Mauchly. Basic Computing Periods - Ages a. Premechanical. The premechanical age is the earliest age of information technology. It can be defined as the time between 3000B.C. and 1450A.D. We are talking about a long time ago. When humans first started communicating they would try to use language or simple picture drawings known as petroglyths which were usually carved in rock. Early alphabets were developed such as the Phoenician alphabet. As alphabets became more popular and more people were writing information down, pens and paper began to be developed. It started off as just marks in wet clay, but later paper was created out of papyrus plant. The most popular kind of paper made was probably by the Chinese who made paper from rags. Now that people were writing a lot of information down, they needed ways to keep it all in permanent storage. This is where the first books and libraries are developed. You’ve probably heard of Egyptian scrolls which were popular ways of writing down information to save. Some groups of people were actually binding paper together into a book-like form. Also, during this period were the first numbering systems. Around 100A.D. was when the first 1-9 system was created by people from India. However, it wasn’t until 875A.D. (775 years later) that the number 0 was invented. And yes, now that numbers were created, people wanted stuff to do with them, so they created calculators. A calculator was the very first sign of an information processor. The popular model of that time was the abacus. Page 6 of 9  LIVING IN THE IT ERA 08/01/2021 b. Mechanical. The mechanical age is when we first start to see connections between our current technology and its ancestors. The mechanical age can be defined as the time between 1450 and 1840. A lot of new technologies are developed in this era as there is a large explosion in interest with this area. Technologies like the slide rule (an analog computer used for multiplying and dividing) were invented. Blaise Pascal invented the Pascaline which was a very popular mechanical computer. Charles Babbage developed the difference engine which tabulated polynomial equations using the method of finite differences. There were lots of different machines created during this era and while we have not yet gotten to a machine that can do more than one type of calculation in one, like our modern-day calculators, we are still learning about how all of our all-in-one machines started. Also, if you look at the size of the machines invented in this time compared to the power behind them it seems (to us) absolutely ridiculous to understand why anybody would want to use them, but to the people living in that time ALL of these inventions were HUGE. c. Electromechanical. Now we are finally getting close to some technologies that resemble our modern-day technology. The electromechanical age can be defined as the time between 1840 and 1940. These are the beginnings of telecommunication. The telegraph was created in the early 1800s. Morse code was created by Samuel Morse in 1835. The telephone (one of the most popular forms of communication ever) was created by Alexander Graham Bell in 1876. The first radio developed by Guglielmo Marconi in 1894. All of these were extremely crucial emerging technologies that led to big advances in the information technology field. The first large-scale automatic digital computer in the United States was the Mark 1 created by Harvard University around 1940. This computer was 8ft high, 50ft long, 2ft wide, and weighed 5 tons - HUGE. It was programmed using punch cards. How does your PC match up to this hunk of metal? It was from huge machines like this that people began to look at downsizing all the parts to first make them usable by businesses and eventually in your own home. d. Electronic. The electronic age is what we currently live in. It can be defined as the time between 1940 and right now. The ENIAC was the first high -speed, digital computer capable of being reprogrammed to solve a full range of computing problems. This computer was designed to be used by the U.S. Army for artillery firing tables. This machine was even bigger than the Mark 1 taking up 680 square feet and weighing 30 tons - HUGE. It mainly used vacuum tubes to do its calculations. There are 4 main sections of digital computing. The first was the era of vacuum tubes and punch cards like the ENIAC and Mark 1. Rotating magnetic drums were used for internal storage. The second generation replaced vacuum tubes with transistors, punch cards were replaced with magnetic tape, and rotating magnetic drums were replaced by magnetic cores for internal storage. Also during this time high-level programming languages were created such as FORTRAN and COBOL. The third generation replaced transistors with integrated circuits, magnetic tape was used throughout all computers, and Page 7 of 9  LIVING IN THE IT ERA 08/01/2021 magnetic core turned into metal oxide semiconductors. An actual operating system showed up around this time along with the advanced programming language BASIC. The fourth and latest generation brought in CPUs (central processing units) which contained memory, logic, and control circuits all on a single chip. The personal computer was developed (Apple II). The graphical user interface (GUI) was developed. History of Computer: Generations of Computer There are five generations of computer: First generation – 1946 to 1958 Second generation – 1959 to 1964 Third generation – 1965 to 1970 Fourth generation – 1971 to Today Fifth generation – Today to future a. The First Generation. The first computers used vacuum tubes for circuitry and magnetic drums for memory, and were often enormous, taking up entire rooms. They were very expensive to operate and in addition to using a great deal of electricity, generated a lot of heat, which was often the cause of malfunctions. First generation computers relied on machine language, the lowest-level programming language understood by computers, to perform operations, and they could only solve one problem at a time. Input was based on punched cards and paper tape, and output was displayed on printouts. Examples: – ENIAC – EDSAC – UNIVAC I, UNIVAC II, UNIVAC 1101 b. The Second Generation. Transistors replaced vacuum tubes and ushered in the second generation of computers. One transistor replaced the equivalent of 40 vacuum tubes. Allowing computers to become smaller, faster, cheaper, more energy-efficient and more reliable. Still generated a great deal of heat that can damage the computer. Second-generation computers moved from cryptic binary machine language to symbolic, or assembly, languages, which allowed programmers to specify instructions in words. Second generation computers still relied on punched cards for input and printouts for output. These were also the first computers that stored their instructions in their memory, which moved from a magnetic drum to magnetic core technology. Examples: UNIVAC III, RCA 501, Philco Transact S-2000, NCR 300 series, IBM 7030 Stretch, IBM 7070, 7080, 7090 series c. The Third Generation. The development of the integrated circuit was the hallmark of the third generation of computers. Transistors were miniaturized and placed on silicon chips, called semiconductors, which drastically increased the speed and efficiency of computers. It could carry out instructions in Page 8 of 9  LIVING IN THE IT ERA 08/01/2021 billionths of a second. Much smaller and cheaper compare to the second- generation computers. d. The Fourth Generation. The microprocessor brought the fourth generation of computers, as thousands of integrated circuits were built onto a single silicon chip. As these small computers became more powerful, they could be linked together to form networks, which eventually led to the development of the Internet. Fourth generation computers also saw the development of GUIs, the mouse and handheld devices. e. The Fifth Generation. Based on Artificial Intelligence (AI). Still in development. The use of parallel processing and superconductors is helping to make artificial intelligence a reality. The goal is to develop devices that respond to natural language input and are capable of learning and self -organization. There are some applications, such as voice recognition, that are being used today. Page 9 of 9