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.