Computer System -IP

Computer System -IP

1. Input Unit/Device

   • E.g. keyboard, mouse

2. Output Unit(Device)

   • E.g Printer, Monitor

3. Computer Evolution

   • 500 BC
     • Abacus
   • 1642
     • Pascaline
   • 1834
     • Analytic Engine
   • 1890
     • Tabulating Machine
   • 1937
     • Turning Machine
   • 1945
     • EDVAC/ENIAC
   • 1947
     • Transistors
   • 1970
     • Integrated Circuits

4. Hardware

   • Physical Components
     • E.g Keyboard, mouse,screen,CPU

5. Software

   • Computer Programs
     • Programming language
       • High level
         • E.g Python, c
       • Low level
         • E.g Assembly
   • Application s/w
     • General Purpose
     • Customized s/w
   • System s/w
     • Operation system
       • E.g Windows, Unix, Linux
       • Types
         • Single user
         • Multi user
       • Interfaces
         • Command based
           • E.g MSDOS, Unix
         • GUI
           • E.g Windows
         • Touched based
           • E.g Android
         • Voice Based
           • E.g. Android (Google now)
         • Gesture based
           • E.g Waving,eye motion
     • Language Translator
       • Compiler
         • E.g C, C++
       • Assembler
         • E.g Assembly
       • Interpreter
         • E.g Python, java
   • Utility s/w

6. Computer Memory

   • Units of Memory
     • KB
     • MB
     • GB
     • TB
   • Typesof Memory
     • Primary Memory
       • RAM(Random Access Memory)
         • Can perform read and write operations
           • Ram is volatile
       • ROM (Read Only Memory)
         • Only read operation performed
           • Rom if non volatile
     • Cache Memory
       • a very high speed memory
     • Secondary Memory
       • to permanently store the data
   • Data Capturing, Storage, and Retrieval
     • Data Capturing
       • process of gathering data from different sources in digital form
     • Data Storage
       • process of storing the captured data for processing later.
     • Data Retrieval
       • fetching data from the storage devices
     • Data Deletion and Recovery

7. Proprietary or Free and Open Source Software