Disk Operating System

-


USB Universal Serial Bus:
          Keyboard is a standard I/p device. The key board is essential device for all computers.

I. Types of Keyboard (based on Switches)
  1. Mechanical Keyboard
  2. Maintain Keyboard

II. Types of Keyboard based on connector
  1. Normal Key Board (5 pins)
  2. PS – Keyboard

III. USB Universal Serial Bus
Normal keyboard (working of pins)
  1. Pin 1: Keyboard clock
  2. Pin 2: Data transfer
  3. Pin 3: Unused
  4. Pin 4: Ground
  5. Pin 5: +5 V

PS – 2 Keyboard (working of pins)
  1. Pin 1: Keyboard data
  2. Pin 2: Unused
  3. Pin 3: Ground
  4. Pin 4: + 5 V D.C
  5. Pin 5: Clock
  6. Pin 6: Unused

Types of keyboard based on numbers of key
  1. PC extended technology. It contains 83 keys
  2. PC AT (Advance Technology). It contains 83
  3. Cursor added keyboard (Track board KB). It contains 101 keys (In first time)
  4. Windows key added keyboard. It contains 104/105 keys
  5. Power Management keyboard 108 keys
  6. Multimedia or internet keyboard 125/130 keys
Types of Keys
  1. Type writer alphabetic key A to Z
  2. Numeric keys (0 – 9)
  3. Control keys (control – Alter, Esc, Enter)
  4. Cursor movement key or Eruo keys

Function keys (F1 to F12)
  1. Toggle key (caps lock)
  2. Special character keys

Mouse
          Mouse is a pointing I/p device types of mouse based on technology.
  1. Mechanical mouse
  2. Optical mouse
  3. Opto Mechanical mouse

Types of mouse based on interface
  1. Serial mouse
  2. PS – 2 mouse
  3. Bus mouse
  4. USB mouse
  5. Wireless mouse

Types of mouse based on buttons
  1. Single button mouse
  2. Two button mouse
  3. Three button mouse

PS 2 Propretor System
Switches

DIR/P
          It shows list of files and directory in poglio


DIR/W
          It will displace file and directory in width with or in wide screen without three information.

Order by : ( /o)

DIR/ON: To display files and directory in ascending order by file names

DIR/OE: To display files and directory in ascending order by there extension name

DIR/OD: It will shows file and directory in ascending order by there date of creation

DIR/OS: It will show file and directory in reverse order

Syntax:
MD (Make Directory) ß Very Important
C:\> MD file name
C:\> MDDIR filename
C:\> CD file name
C:\> CHDIR filename
CD. To come out to previous directory
CD\ To come out to root directory
C:\> RD xy
Or
C:\> RMDIR xyz
RD  command the directory will be deleted.

Wild Card Characters
  1. * - Any characters
  2. ? one character
  3. DIR ?? .***
C:\> label
C:\> type 1231
C:\> Tree switch
/p

Comments

Post a Comment

Popular posts from this blog

Chemical test for Tragacanth

-
Chemical test for Tragacanth Organoleptic test: Appearance: Crystalline                                                          tragacanth Colour: White or faint yellow                                                 tragacanth Odour: None                                                                           tragacanth Taste: Mucilaginous                                                                tragacanth Solubility: Insoluble in alcohol, partially soluble in water      tragacanth Chemical test: SI.No. Test Observation Inference 1. To 4ml of 0.5%w/v solution add  0.5ml of HCl and heat for 30minutes on water bath Divide the hydrolyzed product in 2 parts a)       1 st part=Add 1.5ml of NaOH solution to neutralize and add Fehling’s solution A and B in equal quantities(mixed before) and warm over water bath. b)       2 nd part= Add barium chloride solution Red ppt o
Read more

MINOR DISORDERS OF NEW BORN AND ITS MANAGEMENT - NURSING ASSIGNMENT

-
INTRODUCTION         Neonatal health problems are frequently found ranging from minor physical or physiological peculiarities to the serious life threatening illnesses. Minor problems should not be ignored lightly without adequate assessment of the conditions. Early diagnosis and management of the serious problems help to overcome life long disability and to reduce neonatal morbidity and mortality. Nurses are responsible to manage the minor problems and to detect the serious problems for early and prompt management along with appropriate nursing interventions and support to the mother. MINOR DISORDERS OF NEW BORN 1. VOMITING         Vomiting is one of the common manifestations in the neonates. Regurgitation after feeds should not be confused with vomiting. Mucus vomiting often hinged with blood is quite common soon after birth. It is due to irritation often gastric mucosa by the swallowed materials during birth. Causes: ·         Dietic ·         Over feeding
Read more

KANGAROO CARE - NURSING ASSIGNMENT

-
INTRODUCTION         Caring low birth weight baby is a great challenge for the neonatal care unit and the family. Number of low birth weighs baby is still for beyond the expected target in our country. The cost of the quality management of these babies is increasing day by day. Kangaroo care is low cost approach for the care of low birth weight baby. This method of care was introduced and popularized by Dr.Edger Ray, Dr.Martinez and Dr.Charpak in late 1970s. DEFINITION         Kangaroo Mother Care (KMC) is a special way of caring low birth weight infants by skin to skin contact if promotes their health and welling by effective thermal control, breast feeding and bonding. KMC is initiated in hospital and continued at home. COMPONENTS OF KMC         In KMC, the infant is continuously kept in skin contact by the mother and breastfed exclusively to the utmost extent.         The two components of KMC are; 1.    Skin to skin contact is provi
Read more