Intro

Platform Technologies Overview

• Platform = Hardware + Software + Networks

• It serves as a base for other technologies and processes.

Generations of Computing

1. Vacuum Tubes (1945–55) – Used punch cards, machine language.

2. Transistors & Batch Systems (1955–65) – Mainframes, early programming (FORTRAN).

3. ICs & Multiprogramming (1965–80) – Time-sharing systems like MULTICS.

4. Personal Computers (1980–Present) – IBM PC, Windows, Linux.

5. Mobile Computing (1990–Present) – Smartphones, iOS, Android.

Modern Computers & Architecture

• Key components: Processors, memory, disks, I/O devices.

• Operating System (OS): Manages hardware, provides an interface for programs.

• Types of OS: Mainframe, Server, Multiprocessor, Personal, Embedded, Real-time, etc.

Operating System Concepts

• Manages resources: CPU, memory, I/O, file system.

• Acts as an extended machine (simplifies hardware usage).

• Acts as a resource manager (allocates time & space efficiently).

IT Infrastructure Evolution

• Mainframes & Minicomputers (1959–Present) – IBM mainframes, early computing.

• Personal Computers (1981–Present) – Growth of software & computing power.

• Client/Server Era (1983–Present) – Networked computing, multitier servers.

• Enterprise Computing (1992–Present) – Integration of networks & applications.

• Cloud & Mobile Computing (2000–Present) – Internet-based computing & mobile access.

IT Infrastructure Components

1. Hardware Platforms – PCs, Servers, Mainframes.

2. OS Platforms – Windows, Linux, macOS, Android, iOS.

3. Enterprise Software – Business applications (SAP, Oracle).

4. Data Storage – Databases (SQL, MySQL) & Storage Networks (SANs).

5. Networking – Internet, servers, cloud computing.

6. Internet Platforms – Web services, cloud storage (Amazon, Google).

7. Consulting & System Integration – Software integration & legacy systems.

Next Steps

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