   Computer is an electronic    device.       It    consist    hardware & software .    Problems given through    input d...
jangidml@rediff.com   3
   CPU- microprocessor                         Input devices                         Output devicesjangidml@rediff.com ...
   Mother Board                         CPU                         RAM                         Hard disk -HD         ...
   Motherboard is a    circuit    board, main part    in the cabinet &    have various slots    for CPU, memory    card, ...
 Central Microprocessor  Unit is brain of computer.  CPU consist CU,ALU &  memory units. Speed – clock speed in  GHz Ma...
 Input units for input the  order to CPU for a task. Keyboard Mouse Scanner Mic CD DVD etc.    jangidml@rediff.com ...
 Alphabet keys                       Numerical keys                       Functional keys                       Specia...
    Types-                     Mechanical &                      Optical                     Wired & Wireless          ...
   Mic is an input device for input through    voice. It is useful for call & video    chatting.                jangidml@...
   Web cam , means                          web camera, useful                          in video call &                  ...
 Output units display the performed  task by CPU CRT – cathode ray tube  LCD – Liquid crystal diode  LED – Light emittin...
   CRT- Cathode Ray Tube   Electron/Cathode ray    strike on screen of CRT to    illuminate phosphor    coating.   Qual...
        LCD – Liquid Crystal                      Diode ( Indium-tin oxide)                      kept between electrode  ...
     Laser printer based on laser            beam as head           Beam focused on drum            assembly & charged w...
       Dot matrix printer used                      head with tiny hammer                      to strike on paper with   ...
    Inkjet printer work with                      jet of color                     Jet -small nozzle & spray            ...
   Multi Function Printer                          works as -                         Print                         Sca...
   Scanner works as                          copier .                         It scan                          document,...
   Speakers used for                          output of sound eg.                          song, bhajan, text to         ...
       Primary & & temporary;                      magnetic, optical & solid                      state; removable & fixe...
   Mass storage magnetic    device   Set of stacked disks   Record by head on    concentric track further in    sector....
   ROM or BIOS or                          CMOS                         Types of ROM-                            PROM  ...
   ROM-Read only                          memory/ permanent                         RAM – Random                        ...
   Cache memory –                      primary memory                     Fast to retrieve                     A place ...
   Flexible plastics disc                     Size – 3.5, 5.25 & 8 inch                     Memory – 1.44 MB           ...
   Optical media with                          laser read-write                          head                         Si...
   Optical media for    memory   Read – Write head with    laser   Digital format   Bump & land – 650 nm   Memory – S...
   Optical media                         Digital memory                         Head – Blue laser                      ...
   CD – 780 NM / 700MB    Single side-only   DVD – 650 NM / 4.7 GB    Double side -8.5 GB   BD – 450 NM / 25 GB    Doub...
   External Hard Disc    used for removable    & portable purpose   Magnetic media for    memory   Same mechanism as   ...
   Semi conductor    media for memory   No mechanical part   Memory – 8/16/32/64    GB low compare    with HD   Easy t...
   Solid state device –                          semi conductor                          based memory units.             ...
   Pen or Thumb drive                          are portable & useful                          to carry data for          ...
   UPS is Unirripted Power    Supply unit, Main    power supply for    Desktop PC. It connect    through AC & output    s...
 MODEM : Modulation &  Demodulation device Device for access &  send data through  internet Internal & external Work t...
jangidml@rediff.com   38
Basics of Computer Hardwares.. JANGID ML
Upcoming SlideShare
Loading in …5
×

Basics of Computer Hardwares.. JANGID ML

678 views

Published on

Published in: Education
0 Comments
1 Like
Statistics
Notes
  • Be the first to comment

No Downloads
Views
Total views
678
On SlideShare
0
From Embeds
0
Number of Embeds
2
Actions
Shares
0
Downloads
0
Comments
0
Likes
1
Embeds 0
No embeds

No notes for slide

Basics of Computer Hardwares.. JANGID ML

  1. 1.  Computer is an electronic device. It consist hardware & software . Problems given through input devices & produce result through display & printouts. Types- Size - micro, mini, mainframe & super Signal – analog , digital & hybrid eg.- PC, desktop, laptop, notebook, tablet etc. jangidml@rediff.com 2
  2. 2. jangidml@rediff.com 3
  3. 3.  CPU- microprocessor  Input devices  Output devicesjangidml@rediff.com 4
  4. 4.  Mother Board  CPU  RAM  Hard disk -HD  Floppy disc -FD  Fan  SMPSjangidml@rediff.com 5
  5. 5.  Motherboard is a circuit board, main part in the cabinet & have various slots for CPU, memory card, HD,FD, Displ ay , Graphic etc. jangidml@rediff.com 6
  6. 6.  Central Microprocessor Unit is brain of computer. CPU consist CU,ALU & memory units. Speed – clock speed in GHz Makers- Intel(Pentium,celeron,i3,i7), AMD (Athlon, Piledriver) etc. 1969,Intel’s Victor Poor, developed first single chip microprocessor , known as the 4004.It was a 4-bit CPU . jangidml@rediff.com 7
  7. 7.  Input units for input the order to CPU for a task. Keyboard Mouse Scanner Mic CD DVD etc. jangidml@rediff.com 8
  8. 8.  Alphabet keys  Numerical keys  Functional keys  Special keys  Standard keys -104  Herman Hollerith : first keypunch device  Types -  Mechanical & Membrane  Wired & Wireless  QWERTY & Dvorakjangidml@rediff.com 9
  9. 9.  Types-  Mechanical & Optical  Wired & Wireless  Three Button – Left, Right & Scroll  Developed - 1984jangidml@rediff.com 10
  10. 10.  Mic is an input device for input through voice. It is useful for call & video chatting. jangidml@rediff.com 11
  11. 11.  Web cam , means web camera, useful in video call & chatting on internet.  Quality of photo depends on pixel of webcam  Approximate 2 MP useful in this worksjangidml@rediff.com 12
  12. 12.  Output units display the performed task by CPU CRT – cathode ray tube LCD – Liquid crystal diode LED – Light emitting diode Plasma, Touch Screen etc Printer – DMP, MFP, Laser, Inkjet etc DVD,CD,Pen drive etc jangidml@rediff.com 13
  13. 13.  CRT- Cathode Ray Tube Electron/Cathode ray strike on screen of CRT to illuminate phosphor coating. Quality of picture depends on dot per inch on screen, resolution, color depth & size of monitor. Types- monochrome, color jangidml@rediff.com 14
  14. 14.  LCD – Liquid Crystal Diode ( Indium-tin oxide) kept between electrode & polarized plate which are at 90°  Mirror on back side  No current – no light reflected by mirror.  Current on electrode, light blocked & image appeared  Type -Mono & colorjangidml@rediff.com 15
  15. 15.  Laser printer based on laser beam as head  Beam focused on drum assembly & charged with ion  Toner powder stick on ionic drum  Paper rolled on drum ,powder stick on paper  Paper rolled through heater for fixing imagejangidml@rediff.com 16
  16. 16.  Dot matrix printer used head with tiny hammer to strike on paper with carbon  Head have 9 by 7 hammer  Each character form through 9x7 dot by hammer  Print -low in quality & low costjangidml@rediff.com 17
  17. 17.  Inkjet printer work with jet of color  Jet -small nozzle & spray ink on paper  RBG color make colored print  Non-impactjangidml@rediff.com 18
  18. 18.  Multi Function Printer works as -  Print  Scan  Fax  Copy  It is combines as Laser printer ,scanner ,copier & fax machine.jangidml@rediff.com 19
  19. 19.  Scanner works as copier .  It scan document, Diagram & Photo  Use as OCR  Quality – Pixel per Inch  Flatbed, barcode reader ,hand held scanner etcjangidml@rediff.com 20
  20. 20.  Speakers used for output of sound eg. song, bhajan, text to read out etc.jangidml@rediff.com 21
  21. 21.  Primary & & temporary; magnetic, optical & solid state; removable & fixed  Register in CPU, cache , RAM the other storage devices –HD,DVD,SSD etc  Units – Bit, Byte, MB,GB etc  1 Byte = 8 Bit; 1KB=1024Byte; 1GB=1024x1024Byte.jangidml@rediff.com 22
  22. 22.  Mass storage magnetic device Set of stacked disks Record by head on concentric track further in sector. Two head upper & lower side of plat. To read / write operation called “seek” Speed – 4500 to 7200 rpm Access time – milliseconds Capacity – 300/500 GB,1TB jangidml@rediff.com 23
  23. 23.  ROM or BIOS or CMOS  Types of ROM-  PROM  EPROM  EEPROM  Flash ROMjangidml@rediff.com 24
  24. 24.  ROM-Read only memory/ permanent  RAM – Random access memory / temporary  Slot –SIMM & DIMM  Types of RAM- DDR,SD,ECC, RAMBUS,NV, SRAMSjangidml@rediff.com 25
  25. 25.  Cache memory – primary memory  Fast to retrieve  A place for newest & frequently operation  Placed in CPU & RAMjangidml@rediff.com 26
  26. 26.  Flexible plastics disc  Size – 3.5, 5.25 & 8 inch  Memory – 1.44 MB  Structure – Treks & sectors  Each sector – 512 MB  Single & High density  Format – first time to writejangidml@rediff.com 27
  27. 27.  Optical media with laser read-write head  Size – 12 cm in diameter  Speed up to 52x  Memory – 700 MB  Write – Land & Pit as digit 1 & 0 signal  Size of pit : 780 nmjangidml@rediff.com 28
  28. 28.  Optical media for memory Read – Write head with laser Digital format Bump & land – 650 nm Memory – SSSL 4.7 GB/DSSL 9.4 / DSDL 18.8 GB jangidml@rediff.com 29
  29. 29.  Optical media  Digital memory  Head – Blue laser  Pit & land as digit 0 & 1  Size of pit : 450 nm  Memory – 25 GBjangidml@rediff.com 30
  30. 30.  CD – 780 NM / 700MB Single side-only DVD – 650 NM / 4.7 GB Double side -8.5 GB BD – 450 NM / 25 GB Double side- 50 GB jangidml@rediff.com 31
  31. 31.  External Hard Disc used for removable & portable purpose Magnetic media for memory Same mechanism as Hard Disc Speed – 7200RPM Memory – 500 GB/ 1 TB jangidml@rediff.com 32
  32. 32.  Semi conductor media for memory No mechanical part Memory – 8/16/32/64 GB low compare with HD Easy to use & light weight Costly jangidml@rediff.com 33
  33. 33.  Solid state device – semi conductor based memory units. These are small in size but much costly. Used in Tab PC, Camera, Mobile, laptop etc.jangidml@rediff.com 34
  34. 34.  Pen or Thumb drive are portable & useful to carry data for retrieve from laptop, PC etc.  Capacity – 2/4/8/18/32 GBjangidml@rediff.com 35
  35. 35.  UPS is Unirripted Power Supply unit, Main power supply for Desktop PC. It connect through AC & output supply as stable DC voltage. Laptop have battery for stabilized power supply jangidml@rediff.com 36
  36. 36.  MODEM : Modulation & Demodulation device Device for access & send data through internet Internal & external Work through network card(internal) in PC Router is a device which acts as an interface between two jangidml@rediff.com 37
  37. 37. jangidml@rediff.com 38

×