Foundations of Technology: Past, Present & Future

Foundations of Technology

  • Technology: tools & methods applying knowledge to solve problems/achieve goals.
  • Computer: programmable machine that \text{input} \rightarrow \text{process} \rightarrow \text{store} \rightarrow \text{output} data.
  • Three pillars:
    • Computing Technology (Engine)
    • Communication Technology (Network)
    • Information Technology (System)

Computing Technology (Engine)

  • Mechanical Era:
    • Abacus ( 3000\,\text{BC} ) – counting frame.
    • Pascaline ( 1642 ) – first mechanical calculator.
    • Jacquard Loom ( 1804 ) – punch-card control.
    • Babbage Analytical Engine ( 1837 ) – general-purpose design.
  • Electromechanical Era:
    • Hollerith Tabulator ( 1890 ) – census; birth of IBM.
    • Turing Machine ( 1936 ) – theoretical model.
  • Electronic Era:
    • ENIAC ( 1945 ), UNIVAC I ( 1951 ).
    • Transistor ( 1947 ), Integrated Circuit ( 1958 ).
  • Personal Computing:
    • Altair 8800 ( 1975 ), Apple I/II ( 1976/1977 ), IBM PC ( 1981 ), GUI ( 1970\text{s}-1980\text{s} ).
  • Mobility & Ubiquity:
    • Laptops ( Osborne 1, 1981 ).
    • Smartphones ( IBM Simon, 1992 ).
    • Tablets ( GRiDPad 1900 , 1989 ).
    • Wearables ( smartwatches, 2010\text{s} ).
  • Fundamentals:
    • Hardware: CPU, RAM/ROM, HDD/SSD, I/O, motherboard.
    • Software: OS, apps, programming languages.
    • Data: bits, bytes, binary.

Communication Technology (Network)

  • Pre-Industrial Long-Distance:
    • Smoke signals ( \sim1500\,\text{BC} ), Semaphore ( 1792 ), Pony Express ( 1860–1861 ).
  • Wired Revolution: Telegraph ( 1837 ), Telephone ( 1876 ).
  • Wireless/Digital:
    • Radio ( 1895/1901 ), Television ( 1927 ).
    • ARPANET ( 1969 ), TCP/IP ( 1974 ).
    • Cellular: 1\text{G} ( 1983 ) → 5\text{G} ( 2019 ).
    • Fiber optics ( 1970 ), Comms satellites ( Telstar 1962 ), GPS ( 1978 ).
  • Internet Age:
    • World Wide Web ( proposal 1989 , public 1991 ).
    • Broadband ( 1990\text{s} ), Wi-Fi ( standard 1997 , consumer 1999 ).
  • Fundamentals:
    • Components: sender, receiver, medium (copper, fiber, radio), protocols (TCP/IP, HTTP, SMTP).
    • Network scopes: PAN, LAN, WAN, Internet; key metrics: bandwidth, latency; packet switching.

Information Technology (System)

  • Early Processing: Punched cards ( 1890 ), Mainframes ( 1950\text{s}–1960\text{s} ).
  • Business Systems: Relational DBs ( 1970 ), ERP ( 1973/1992 ), CRM ( 1993 ).
  • Client-Server ( 1980\text{s} ), Web Apps ( 1995+ ).
  • Cloud Platforms: AWS ( 2006 ), Azure ( 2010 ), GCP ( 2008 ).
  • Data Era: Big Data ( \ge2010 ), Warehouses ( 1990\text{s} ), Lakes ( 2010\text{s} ).
  • Core Components: hardware, software, networks, data, people, processes.
  • Key Functions: DB management, sys/network admin, cybersecurity, support, app dev.

Convergence & Interconnection

  • Cloud computing = IT service delivered via Comm Tech using remote Computers.
  • Combined effect: pervasive digital services, automation, real-time global access.

Societal & Ethical Issues

  • Privacy, data security, cybersecurity.
  • Digital divide & accessibility.
  • Automation’s impact on jobs.
  • Misinformation & digital literacy.
  • Environmental concerns: e-waste, energy use.

High-Yield Recall

  • Input-Process-Output-Storage cycle.
  • Transistor & IC as key miniaturization milestones.
  • TCP/IP enables Internet; WWW provides hyperlinked content.
  • IT = value from information; Comm Tech = movement; Computing Tech = processing.
  • Quote: “Make tech fit daily life” – Bill Gates.