Index

TECHNICAL SUPPORT FUNDAMENTALS

  1. INTRO -> IT
    1. HISTORY OF COMPUTING
    2. DIGITAL LOGIC
    3. COMPUTER ARCHITECTURE LAYER
  2. HARDWARE
    1. The Modern Computer
    2. MOBILE DEVICES
    3. PERIPHERALS
    4. STARTING IT UP
  3. OPERATING SYSTEM
    1. INTO KERNEL
    2. USER SPACE
    3. INSTALLING OS
  4. NETWORKING
    1. INTERNET
  5. SOFTWARE
  6. TROUBLESHOOTING

HISTORY OF COMPUTING

HISTORY OF COMPUTING:
• Computer was reffered to something that performs calculations.
• QWERTY : Claim: slow down typist jobs.

Few firsts :-
1. Abacus: earlieast computers
2. Mechanical Calculator: Blaise Pascal . gears ...
3. Programmable loom ..for textiles...hooks in hole...punch cards
4. Difference Engine: Charles Babbage (calculator)
5. First algorithm : Ada Lovelace --could be proggramed into analytical engine

Path to modern computer machines :
1. Cryptography : secret messages -> secure communication
2. Alan Turing ..Enigma Machine - German Military invention
3. IBM , HP ..research ..governments ..after war focus
4. Magnetic Tape -> storage
5. vaccum tubes, huge racks, stacking of punch cards
6. Harvard Mark II : bug -> a moth
7. Transistors
8. First compiler : Admiral Grace Hoper
9. Hard disks,microprocessors
10. Xerox ALto : GUI, start of what we see
11. Apple 1 : single board computer 1970's
12. IBM : personal computers . MS DOS 1980
13. Microsoft : windows (OS)
14. ATARI Arcades game (PONG) VIdeo game era
15. ATARI video console system
16. Stallman - GNU .Opensource -> LINUX
17. PDA : Personal Digital assisstants -> mobile -pocketable computers