a history of computing
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A History of Computing. An Adventure in Human Inventiveness. “Napier’s Bones” were moveable rods that allowed the operator to multiply, divide, and calculate square and cube roots. George Boole 1815 - 1864. - PowerPoint PPT PresentationTRANSCRIPT
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A History of Computing
An Adventure in Human Inventiveness
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“Napier’s Bones” were moveable rods that allowed the operator to multiply, divide, and
calculate square and cube roots.
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Self taught mathematician who developed Boolean algebra, the basis
of the digital computer circuit.
George Boole
1815 - 1864
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The ENIAC used 18,000 vacuum
tubes and required a pair of these tubes
joined in a particular
manner to hold in memory a single bit of
data.
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Generations of Computers
• Early 50s First Generation• Mid 1950s Second Generation• Early 1960s Third Generation• 1970- 1990s Fourth Generation• 1990s-present Fifth Generation
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Early 50s First Generation
• Vacuum tubes
• Pioneering work on magnetic storage
• Data held on tapes and drums in serial manner
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Mid 1950s Second Generation
• Transistors replaced vacuum tubes
• Conducted electricity more efficiently
• Consumed less energy• Needed less space• Generated less heat• Didn’t burn out
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Invention of IBM 360 in 1964 began Third Generation
• Integrated circuits on a chip• Magnetic disks replaced magnetic
tape as storage device• Video display/keyboard replaced
punched card input• Large-scale integration (LSI) put
hundreds of thousands of transistors on a silicon chip
• LSI led to computers in cameras, TVs and cars
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1442N1 Card reader/ punch S/360 CPU, model 30(?) 2260 Display terminal 1403N1 Impact printer 2305 Drum storage 2401 Tape storage 2803 Tape control unit 2321 Data cell storage LCS Large core storage device1443 Impact printer 2821 Control unit 2311 Disk storage 2841 DASD control unit 1052 Console typewriter
1072 Console station IBM SYSTEM/360
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1970-1990s Fourth Generation
• 1970 – Intel 4004 Microprocessor used in calculators
• 1974 – Intel 8080 capable of running a CPU
• 1977 – Apple II and VisiCalc
• 1981 – IBM PC
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1990s-2000s Fifth Generation
• Incredibly fast chips• Artificial Intelligence• Voice synthesizers• Wireless networks• Parallel processing• Flat panel displays• Touch screens &
handwriting recognition
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History of Computers in Education
• Before the Microcomputer– Programmed Instruction– Teaching Machines– Computer Assisted Instruction
• The time of the Microcomputer– Computer Interest Groups (CIGs)– Conferences– Organizations/Magazines/Journals
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B.F. Skinner developed a Teaching Machine to facilitate the use of
Programmed Instruction, the forerunner of computer
tutorials used today
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Programming and Literacy
• 1980s movement to teach programming– BASIC– Logo and Constructivism– Seymour Papert: Mindstorms
• Computer Literacy– Ability to understand and use computers– Computer Literacy courses for future teachers
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Networking and the Internet
• Connecting computers and peripherals to a communication system
• U.S. Dept of Defense created Internet
• MOSAIC navigator tool
• Graphical User Interfaces
• Distance Education
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Handheld Computing Devices
• Palm Pilot and Blackberry
- store and retrieve information
- access files on a remote computer
- download data to upload later
- uses unique strokes / keyboard to input data
• Cell phone + digital camera + web browser
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What Will They Think of Next?
• Introduce yourself to a partner
• Talk about the technology you use
• Dream up a cool new techno device