The History of the
Computer
Then

&

Now

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Computer Evolution


1642 Blaise Pascal – mechanical adding machine

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Computer Evolution




Early 1800’s Jacquard –
uses punch cards to
control the pattern of
the weaving loom.
1832 Charles...
The Punch Card


1890 Herman Hollerith
– invents a machine
using punch card to
tabulate info for the
Census. He starts th...
Evolution (continued)
1946 – Mauchly and Eckert created the ENIAC
computer, first electronic computer is unveiled
at Unive...
ENIAC Computer











Miles of wiring
18,000 vacuum tubes
Thousands of resistors and switches
No monitor
3,0...
1943




Base codes develop by Grace Hopper while
working on the Mark I programming project.
She invented the phrase “bu...
1950s







Vacuum Tubes were the components for the
electronic circuitry
Punch Cards main source of input
Speeds i...
1960s







Transistors were electronic circuitry (smaller,
faster, more reliable than vacuum tubes)
Speeds in micr...
Late 60’s Early 70’s







Integrated circuit boards
New input methods such as plotters, scanners
Software became m...
1970’s Integrated circuits and
silicone chips lead to smaller
microprocessors

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Late 80’s to Current







Improved circuitry – several thousand transistors
placed on a tiny silicon chip.
Pentium...
The Information Processing Cycle
MAIN
MEMORY

INPUT

PROCESSING

AUXILIARY
STORAGE
For more materials of Bank Exams visit ...
INPUT








INPUT DEVICES
(Hardware)

Keyboard
Mouse
Joystick
Trackball
Light pen
Image scanner








Touc...
PROCESSING

PROCESSING

HARDWARE




Central Processing Unit: CPU
The Brains or Intelligence of the
computer. Controls ...
What two numbers are used in
Binary Code?









0 and 1
They are each called a BIT
8 BITS make a BYTE
1 BYTE ma...
MEMORY

MEMORY

PROCESSING HARDWARE
ROM

READ ONLY MEMORY





RAM

RANDOM ACCESS MEMORY

Small
Instructions are insta...
OUTPUT DEVICES
(HARDWARE)



Useful information that leaves the system
Output Hardware includes:
•Monitor: soft copy
•Pr...
AUXILIARY STORAGE DEVICES
AUXILIARY
STORAGE










Network Drive (H: drive)
Hard Disk Drive (C:drive)
Floppy Dis...
Computer Hardware

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Hardware


Includes the electronic and mechanical devices
that process the data; refers to the computer as
well as periph...
System Unit


Case that holds the power supply, storage
devices and the circuit boards (including the
motherboard).

For ...
CPU (Central Processing Unit)


Where the processing in
a computer takes place,
often called the brain of
the computer.

...
Circuits




The path from one
component of a
computer to another
that data uses to travel.
Circuits run between




R...
Silicon Chip



Silicon is melted sand.
What the circuits are
embedded into to keep
them together.

For more materials o...
Peripheral Devices



Devices connected by cable to the CPU.
Used to expand the computer’s input, output
and storage cap...
Input Devices


Units that gather
information and
transform that
information into a series
of electronic signals for
the ...
Keyboard


An arrangement of
letters, numbers, and
special function keys
that act as the primary
input device to the
comp...
Mouse


An input device that
allows the user to
manipulate objects on
the screen by moving
the mouse along the
surface of...
Sound Card


A circuit board that
gives the computer the
ability to accept audio
input, play sound files,
and produce aud...
Modem




A device that sends and
receives data to and
from computers over
telephone lines.
Means (Modulate –
Demodulate...
Output Devices


Devices that display, print or
transmit the results of
processing from the
computers memory.

For more m...
Monitor


Display device that forms an image by
converting electronic signals from the
computer into points of colored li...
Resolution




The density of the grid used to display or print
text and graphics; the greater the horizontal
and vertic...
Pixels




The smallest unit in a graphic image; computer
display devices use a matrix of pixels to display
text and gra...
Printer


Output device that
produces text or
graphical images on
paper.

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ww...
Speakers


Output devices that receive signals from the
computer’s sound card to play music, narration,
or sound effects....
Storage Devices




Used to keep data when
the power to the
computer is turned off.
Different forms




Hard disk
Flo...
Formatted



Arrangement of data for storage or display.
All storage devices must be formatted.

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Hard Disk


Rigid magnetic disk mounted for permanent
storage

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Floppy Disk


Small portable magnetic disk enclosed in stiff
envelope

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Compact Discs


CDCD-ROM




CDCD-R




Compact disk with read only memory
Compact disk which you can write to only o...
DVD


DVD ROM




DVDDVD-R




Digital Video Disk which is read only.
Digital Video Disk which can be written to one
...
Flash or Jump Drives




External storage devices that can be used like a
external hard drive.
They have the capability ...
Software Components

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Software


A computer program that tells the computer
how to perform particular tasks.

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Program


A series of commands and executable files that
produce results.

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w...
Operating System




Software that translates a computers
commands and allows application programs to
interact with the ...
Application Software



Program that performs a specific function.
Examples
Microsoft Office
 Adobe Photoshop
 WordPer...
Multitasking



Ability to do more than one thing at a time.
Computers can run several application software
programs and...
Software Use


Icon




GUI (Graphical User Interface)




Image that represent executable files.
Graphics that aid i...
Types of Computers

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Super Computer




Mainframe computer which is the largest,
fastest or most powerful at one given time.
A computer that...
Super Computer

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Mainframe







Large powerful computer often serving many
connected terminals.
Large expensive computer capable of
s...
Mainframe

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Server





A computer that processes request for HTML
and other documents that are components of
Web pages.
Purpose is...
Workstation






Desktop computer which is usually more powerful
than a Microcomputer.
Powerful desktop computer des...
Workstation

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Desktop Microcomputer





Small computer based on a microprocessor.
A personal computer designed to meet the
needs of ...
Desktop Microcomputer

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Laptop or Notebook








Portable, compact computer that runs on a wall
outlet or battery unit with all components i...
Handheld






Also called a PDA (Personal Digital Assistant).
A computer that fits into a pocket, runs on
batteries, ...
Networks


File Server




A computer dedicated to running applications and
storing data. May be shared with other
work...
Network
 Two or more computers and other

devices that are connected, for
the purpose of sharing data and
programs.

For ...
Types of Networks


LAN Intranetwork




Local Area Network A method by which multiple
computers are connected. (CJH)

...
Computer Performance
and Processing

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Boot Process




Sequence of events that occurs between the time
you turn on a computer and the time that it
becomes rea...
6 events of the boot process:
 Power

up
 Start boot program
 Power-on self-test
Power- self Identify peripheral devic...
Megahertz (mHz)






A measurement used to describe the speed of
the system clock.
A megahertz is equal to one million...
Pentium



Name of the CPU.
Pentium is the 5th generation of the Intel
processor.


Other generations were called:
8080...
RAM vs. ROM


RAM







“Random Access Memory”
The ability of a storage devices
to go directly to a specific
storage...
Binary Number System






A method for representing numbers using only
two digits 0 and 1.
Bit – each 0 or 1.
Byte – ...
Memory Measurements


Bit




Byte




Approximately 1 million bytes (Exactly 1, 048,576 bytes)

Gigabyte




Appro...
Basic Terms

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Basic Terms


Computer


A device that accepts input, processes data, stores
data, and produces output, all according to...
Basic Terms


Input




Output




Any information, data, sound, etc. that is created
and fed into the computer.
Usef...
Basic Terms


Processing




Memory




Manipulation of the data in many ways
Area of the computer that temporarily h...
Basic Terms


File management




Folders




A method of organizing files and folders to make
data more easily acces...
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Computers for-bank-exams-guide4 bankexams

  1. 1. The History of the Computer Then & Now For more materials of Bank Exams visit us at www.Guide4BankExams.blogspot.in/
  2. 2. Computer Evolution  1642 Blaise Pascal – mechanical adding machine For more materials of Bank Exams visit us at www.Guide4BankExams.blogspot.in/
  3. 3. Computer Evolution   Early 1800’s Jacquard – uses punch cards to control the pattern of the weaving loom. 1832 Charles Babbage invents the Difference Engine For more materials of Bank Exams visit us at www.Guide4BankExams.blogspot.in/
  4. 4. The Punch Card  1890 Herman Hollerith – invents a machine using punch card to tabulate info for the Census. He starts the company that would later be IBM. For more materials of Bank Exams visit us at www.Guide4BankExams.blogspot.in/
  5. 5. Evolution (continued) 1946 – Mauchly and Eckert created the ENIAC computer, first electronic computer is unveiled at University of Pennsylvania (shown on next slide) For more materials of Bank Exams visit us at www.Guide4BankExams.blogspot.in/
  6. 6. ENIAC Computer           Miles of wiring 18,000 vacuum tubes Thousands of resistors and switches No monitor 3,000 blinking lights Cost $486,000 100,000 additions per second Weighed 30 tons Filled a 30x50 foot room Lights of Philadelphia would dim when it booted For more materials of Bank Exams visit us at up www.Guide4BankExams.blogspot.in/
  7. 7. 1943   Base codes develop by Grace Hopper while working on the Mark I programming project. She invented the phrase “bug” – an error in a program that causes a program to malfunction. For more materials of Bank Exams visit us at www.Guide4BankExams.blogspot.in/
  8. 8. 1950s       Vacuum Tubes were the components for the electronic circuitry Punch Cards main source of input Speeds in milliseconds (thousands/sec) 100,000 additions/sec. Used for scientific calculations New computers were the rule, cost effectiveness wasn’t’ For more materials of Bank Exams visit us at www.Guide4BankExams.blogspot.in/
  9. 9. 1960s       Transistors were electronic circuitry (smaller, faster, more reliable than vacuum tubes) Speeds in microseconds (millionth/sec) 200,000 additions/sec. Computers In Businesses: Emphasis on marketing of computers to businesses Data files stored on magnetic tape Computer Scientists controlled operations For more materials of Bank Exams visit us at www.Guide4BankExams.blogspot.in/
  10. 10. Late 60’s Early 70’s       Integrated circuit boards New input methods such as plotters, scanners Software became more important Sophisticated operating systems Improved programming languages Storage capabilities expanded (disks) For more materials of Bank Exams visit us at www.Guide4BankExams.blogspot.in/
  11. 11. 1970’s Integrated circuits and silicone chips lead to smaller microprocessors For more materials of Bank Exams visit us at www.Guide4BankExams.blogspot.in/
  12. 12. Late 80’s to Current       Improved circuitry – several thousand transistors placed on a tiny silicon chip. Pentium chip named by Intel Modems – communication along telephone wires Portable computers: laptops Increased storage capabilities: gigabytes Emphasis on information needed by the decision maker. For more materials of Bank Exams visit us at www.Guide4BankExams.blogspot.in/
  13. 13. The Information Processing Cycle MAIN MEMORY INPUT PROCESSING AUXILIARY STORAGE For more materials of Bank Exams visit us at www.Guide4BankExams.blogspot.in/ OUTPUT
  14. 14. INPUT       INPUT DEVICES (Hardware) Keyboard Mouse Joystick Trackball Light pen Image scanner       Touch tone telephone Touch screens Bar code scanner Digitizer Voice recognition Auxiliary Storage Device For more materials of Bank Exams visit us at www.Guide4BankExams.blogspot.in/
  15. 15. PROCESSING PROCESSING HARDWARE    Central Processing Unit: CPU The Brains or Intelligence of the computer. Controls input and output The part of the computer that interprets and executes instructions.   Silicon chip: integrated circuit board Pentium: name give to a particular chip For more materials of Bank Exams visit us at www.Guide4BankExams.blogspot.in/
  16. 16. What two numbers are used in Binary Code?         0 and 1 They are each called a BIT 8 BITS make a BYTE 1 BYTE makes a letter or number KILOBYTE = 1,024 bytes MEGABYTE = 1,048,576 bytes GIGABYTE = 1,024 megabytes TERABYTE = 1,024 gigabytes For more materials of Bank Exams visit us at www.Guide4BankExams.blogspot.in/
  17. 17. MEMORY MEMORY PROCESSING HARDWARE ROM READ ONLY MEMORY     RAM RANDOM ACCESS MEMORY Small Instructions are installed permanently at the factory Cannot be changed These instructions check the computer’s resources and looks for Operating System    Main Memory Temporary— Temporary—it is erased when turned off. It is where programs and data is stored while being processed For more materials of Bank Exams visit us at www.Guide4BankExams.blogspot.in/
  18. 18. OUTPUT DEVICES (HARDWARE)   Useful information that leaves the system Output Hardware includes: •Monitor: soft copy •Printers: hard copy •Flat Panel displays •Voice and music - speakers •Synthesizers •Plotters For more materials of Bank Exams visit us at OUTPUT www.Guide4BankExams.blogspot.in/
  19. 19. AUXILIARY STORAGE DEVICES AUXILIARY STORAGE        Network Drive (H: drive) Hard Disk Drive (C:drive) Floppy Disk Drive with 3 ½” Floppy Disk (A:drive) Smart card CD Read/Write Drive Zip Drive Digital Audio Tape For more materials of Bank Exams visit us at www.Guide4BankExams.blogspot.in/
  20. 20. Computer Hardware For more materials of Bank Exams visit us at www.Guide4BankExams.blogspot.in/
  21. 21. Hardware  Includes the electronic and mechanical devices that process the data; refers to the computer as well as peripheral devices For more materials of Bank Exams visit us at www.Guide4BankExams.blogspot.in/
  22. 22. System Unit  Case that holds the power supply, storage devices and the circuit boards (including the motherboard). For more materials of Bank Exams visit us at www.Guide4BankExams.blogspot.in/
  23. 23. CPU (Central Processing Unit)  Where the processing in a computer takes place, often called the brain of the computer. For more materials of Bank Exams visit us at www.Guide4BankExams.blogspot.in/
  24. 24. Circuits   The path from one component of a computer to another that data uses to travel. Circuits run between   RAM and the microprocessor RAM and various storage devices For more materials of Bank Exams visit us at www.Guide4BankExams.blogspot.in/
  25. 25. Silicon Chip   Silicon is melted sand. What the circuits are embedded into to keep them together. For more materials of Bank Exams visit us at www.Guide4BankExams.blogspot.in/
  26. 26. Peripheral Devices   Devices connected by cable to the CPU. Used to expand the computer’s input, output and storage capabilities. For more materials of Bank Exams visit us at www.Guide4BankExams.blogspot.in/
  27. 27. Input Devices  Units that gather information and transform that information into a series of electronic signals for the computer. For more materials of Bank Exams visit us at www.Guide4BankExams.blogspot.in/
  28. 28. Keyboard  An arrangement of letters, numbers, and special function keys that act as the primary input device to the computer. For more materials of Bank Exams visit us at www.Guide4BankExams.blogspot.in/
  29. 29. Mouse  An input device that allows the user to manipulate objects on the screen by moving the mouse along the surface of the desk. For more materials of Bank Exams visit us at www.Guide4BankExams.blogspot.in/
  30. 30. Sound Card  A circuit board that gives the computer the ability to accept audio input, play sound files, and produce audio output through speakers or headphones. For more materials of Bank Exams visit us at www.Guide4BankExams.blogspot.in/
  31. 31. Modem   A device that sends and receives data to and from computers over telephone lines. Means (Modulate – Demodulate). For more materials of Bank Exams visit us at www.Guide4BankExams.blogspot.in/
  32. 32. Output Devices  Devices that display, print or transmit the results of processing from the computers memory. For more materials of Bank Exams visit us at www.Guide4BankExams.blogspot.in/
  33. 33. Monitor  Display device that forms an image by converting electronic signals from the computer into points of colored light on the screen. For more materials of Bank Exams visit us at www.Guide4BankExams.blogspot.in/
  34. 34. Resolution   The density of the grid used to display or print text and graphics; the greater the horizontal and vertical density, the higher the resolution. The amount of Pixels on the screen. The more pixels the better the resolution. For more materials of Bank Exams visit us at www.Guide4BankExams.blogspot.in/
  35. 35. Pixels   The smallest unit in a graphic image; computer display devices use a matrix of pixels to display text and graphics. Basic unit of composition of an image on a TV screen, Computer monitor, or similar display For more materials of Bank Exams visit us at www.Guide4BankExams.blogspot.in/
  36. 36. Printer  Output device that produces text or graphical images on paper. For more materials of Bank Exams visit us at www.Guide4BankExams.blogspot.in/
  37. 37. Speakers  Output devices that receive signals from the computer’s sound card to play music, narration, or sound effects. For more materials of Bank Exams visit us at www.Guide4BankExams.blogspot.in/
  38. 38. Storage Devices   Used to keep data when the power to the computer is turned off. Different forms    Hard disk Floppy or zip disks CDCD-Writer For more materials of Bank Exams visit us at www.Guide4BankExams.blogspot.in/
  39. 39. Formatted   Arrangement of data for storage or display. All storage devices must be formatted. For more materials of Bank Exams visit us at www.Guide4BankExams.blogspot.in/
  40. 40. Hard Disk  Rigid magnetic disk mounted for permanent storage For more materials of Bank Exams visit us at www.Guide4BankExams.blogspot.in/
  41. 41. Floppy Disk  Small portable magnetic disk enclosed in stiff envelope For more materials of Bank Exams visit us at www.Guide4BankExams.blogspot.in/
  42. 42. Compact Discs  CDCD-ROM   CDCD-R   Compact disk with read only memory Compact disk which you can write to only one time. It then becomes a read only disk. CDCD-RW  Compact disk which you may rewrite to. For more materials of Bank Exams visit us at www.Guide4BankExams.blogspot.in/
  43. 43. DVD  DVD ROM   DVDDVD-R   Digital Video Disk which is read only. Digital Video Disk which can be written to one time. It then becomes read only. DVDDVD-RW  Digital Video Disk which can be rewritten to. For more materials of Bank Exams visit us at www.Guide4BankExams.blogspot.in/
  44. 44. Flash or Jump Drives   External storage devices that can be used like a external hard drive. They have the capability to be saved to, deleted from, and files can be renamed just like with a normal hard drive. For more materials of Bank Exams visit us at www.Guide4BankExams.blogspot.in/
  45. 45. Software Components For more materials of Bank Exams visit us at www.Guide4BankExams.blogspot.in/
  46. 46. Software  A computer program that tells the computer how to perform particular tasks. For more materials of Bank Exams visit us at www.Guide4BankExams.blogspot.in/
  47. 47. Program  A series of commands and executable files that produce results. For more materials of Bank Exams visit us at www.Guide4BankExams.blogspot.in/
  48. 48. Operating System   Software that translates a computers commands and allows application programs to interact with the computer’s hardware Examples: Windows XP  Unix  OS 10 (MAC)  For more materials of Bank Exams visit us at www.Guide4BankExams.blogspot.in/
  49. 49. Application Software   Program that performs a specific function. Examples Microsoft Office  Adobe Photoshop  WordPerfect  For more materials of Bank Exams visit us at www.Guide4BankExams.blogspot.in/
  50. 50. Multitasking   Ability to do more than one thing at a time. Computers can run several application software programs and the operating system at the same time. For more materials of Bank Exams visit us at www.Guide4BankExams.blogspot.in/
  51. 51. Software Use  Icon   GUI (Graphical User Interface)   Image that represent executable files. Graphics that aid in accomplishing tasks. Icons on screen. Menus  List or table of executable files For more materials of Bank Exams visit us at www.Guide4BankExams.blogspot.in/
  52. 52. Types of Computers For more materials of Bank Exams visit us at www.Guide4BankExams.blogspot.in/
  53. 53. Super Computer    Mainframe computer which is the largest, fastest or most powerful at one given time. A computer that was the fastest in the world at the time it was constructed. Can tackle tasks that would not be practical for other computers  Typical uses Breaking codes  Modeling weather systems  For more materials of Bank Exams visit us at www.Guide4BankExams.blogspot.in/
  54. 54. Super Computer For more materials of Bank Exams visit us at www.Guide4BankExams.blogspot.in/
  55. 55. Mainframe     Large powerful computer often serving many connected terminals. Large expensive computer capable of simultaneously processing data for hundreds or thousands of users. Used to store, manage, and process large amounts of data that need to be reliable, secure, and centralized. Usually housed in a closet sized cabinet. For more materials of Bank Exams visit us at www.Guide4BankExams.blogspot.in/
  56. 56. Mainframe For more materials of Bank Exams visit us at www.Guide4BankExams.blogspot.in/
  57. 57. Server    A computer that processes request for HTML and other documents that are components of Web pages. Purpose is to “serve.” A computer that has the purpose of supplying its users with data; usually through the use of a LAN (Local Area Network). For more materials of Bank Exams visit us at www.Guide4BankExams.blogspot.in/
  58. 58. Workstation      Desktop computer which is usually more powerful than a Microcomputer. Powerful desktop computer designed for specialized tasks. A microcomputer that fits on a desk and runs on power from an electrical wall outlet. The CPU can be housed in either a vertical or horizontal case. Has separate components (keyboard, mouse, etc.) that are each plugged into the computer. For more materials of Bank Exams visit us at www.Guide4BankExams.blogspot.in/
  59. 59. Workstation For more materials of Bank Exams visit us at www.Guide4BankExams.blogspot.in/
  60. 60. Desktop Microcomputer    Small computer based on a microprocessor. A personal computer designed to meet the needs of an individual; provides a variety of applications. Provides access to a wide variety of computing applications, such as word processing, photo editing, e-mail, and internet. e- For more materials of Bank Exams visit us at www.Guide4BankExams.blogspot.in/
  61. 61. Desktop Microcomputer For more materials of Bank Exams visit us at www.Guide4BankExams.blogspot.in/
  62. 62. Laptop or Notebook     Portable, compact computer that runs on a wall outlet or battery unit with all components in one unit. All components (keyboard, mouse, etc.) are in one compact unit. Usually more expensive than a comparable desktop. Sometimes called a notebook. For more materials of Bank Exams visit us at www.Guide4BankExams.blogspot.in/
  63. 63. Handheld     Also called a PDA (Personal Digital Assistant). A computer that fits into a pocket, runs on batteries, and is used while holding in your hand. Typically used as an appointment book, address book, calculator, and notepad. Can be synchronized with a personal microcomputer as a backup. For more materials of Bank Exams visit us at www.Guide4BankExams.blogspot.in/
  64. 64. Networks  File Server   A computer dedicated to running applications and storing data. May be shared with other workstations IP address  A unique address assigned to a computer so that it may be located across the web. For more materials of Bank Exams visit us at www.Guide4BankExams.blogspot.in/
  65. 65. Network  Two or more computers and other devices that are connected, for the purpose of sharing data and programs. For more materials of Bank Exams visit us at www.Guide4BankExams.blogspot.in/
  66. 66. Types of Networks  LAN Intranetwork   Local Area Network A method by which multiple computers are connected. (CJH) WAN InternetworkWide  Wide Area Network by which large geographical areas can be connected. (Davis District) For more materials of Bank Exams visit us at www.Guide4BankExams.blogspot.in/
  67. 67. Computer Performance and Processing For more materials of Bank Exams visit us at www.Guide4BankExams.blogspot.in/
  68. 68. Boot Process   Sequence of events that occurs between the time you turn on a computer and the time that it becomes ready to accept commands. Purposes   Runs a diagnostic test to make sure everything is working. Loading the operating system, so the computer can carry out basic operations. For more materials of Bank Exams visit us at www.Guide4BankExams.blogspot.in/
  69. 69. 6 events of the boot process:  Power up  Start boot program  Power-on self-test Power- self Identify peripheral devices  Load operation system  Check configuration and customization For more materials of Bank Exams visit us at www.Guide4BankExams.blogspot.in/
  70. 70. Megahertz (mHz)    A measurement used to describe the speed of the system clock. A megahertz is equal to one million cycles (or pulses) per second. 1.3 GHz means that the microprocessor’s clock operates at a speed of 1.3 million cycles per second. For more materials of Bank Exams visit us at www.Guide4BankExams.blogspot.in/
  71. 71. Pentium   Name of the CPU. Pentium is the 5th generation of the Intel processor.  Other generations were called: 8080-88  286  386  486  For more materials of Bank Exams visit us at www.Guide4BankExams.blogspot.in/
  72. 72. RAM vs. ROM  RAM     “Random Access Memory” The ability of a storage devices to go directly to a specific storage location without having to search sequentially for a beginning location. Very volatile   Cannot hold data when the power is off. Losses all data when power is lost. ROM    “Read only memory” Drives can read data from disks, but cannot store new data on them. One or more integrated circuits that contain permanent instructions that the computer uses during the boot process. For more materials of Bank Exams visit us at www.Guide4BankExams.blogspot.in/
  73. 73. Binary Number System     A method for representing numbers using only two digits 0 and 1. Bit – each 0 or 1. Byte – 8 bits Also referred to as Base 2 Binary Code. For more materials of Bank Exams visit us at www.Guide4BankExams.blogspot.in/
  74. 74. Memory Measurements  Bit   Byte   Approximately 1 million bytes (Exactly 1, 048,576 bytes) Gigabyte   Approximately 1 thousand bytes Megabyte   8 bits Kilobyte   Each 0 or 1 Approximately 1 billion bytes Terabyte  Approximately 1 trillion bytes For more materials of Bank Exams visit us at www.Guide4BankExams.blogspot.in/
  75. 75. Basic Terms For more materials of Bank Exams visit us at www.Guide4BankExams.blogspot.in/
  76. 76. Basic Terms  Computer  A device that accepts input, processes data, stores data, and produces output, all according to a series of stored instructions. For more materials of Bank Exams visit us at www.Guide4BankExams.blogspot.in/
  77. 77. Basic Terms  Input   Output   Any information, data, sound, etc. that is created and fed into the computer. Useful information that leaves the system. Data  Facts used by the computer. Refers to the symbols that represent facts, objects or ideas. For more materials of Bank Exams visit us at www.Guide4BankExams.blogspot.in/
  78. 78. Basic Terms  Processing   Memory   Manipulation of the data in many ways Area of the computer that temporarily holds data waiting to be processed, stored, or output. Storage  Area of the computer that holds data on a permanent basis when it is not immediately needed for processing. For more materials of Bank Exams visit us at www.Guide4BankExams.blogspot.in/
  79. 79. Basic Terms  File management   Folders   A method of organizing files and folders to make data more easily accessible. Location of physical media where data is stored File  Individual document created and saved by the user. For more materials of Bank Exams visit us at www.Guide4BankExams.blogspot.in/
  80. 80. We are at Facebook Meet us at For more materials of Bank Exams visit us at www.Guide4BankExams.blogspot.in/
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