COMPUTER BASICS

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COMPUTER BASICS

• Module Review

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After completing the Computer Basics Terms
Worksheet, use this presentation to review any
concepts you had questions on or to check your
answers to the worksheet. On the next slide,
click on the section button that you would like
to review. When you have completed that section,
click TOPIC to go back to the choices. Click END
when you are finished reviewing for the test.
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TOPICSSelect from the following topics
Input and Output
Computers
Memory and Storage
Hardware/ Software
History
END
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INPUT

• Examples of input include words or symbols,
  pictures, temperature from a thermometer, music
  or voice audio signals, instructions from another
  computer
• Input devices include keyboard, scanners,
  joystick
• Gathers information and transforms it into a
  series of electronic signals for the computer.

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OUTPUT

• Examples of output from a computer include
  reports, pictures, graphs, and documents.
• Output devices include speakers, monitors, and
  printers.
• Displays, prints or transmits the results of
  processing.
• It is useful information that leaves the system
  (processed information).

TOPICS
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COMPUTERS

• A computer and its associated storage devices
  that are accessed remotely over a network by
  users is a server.

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COMPUTERS

• A large, powerful, expensive computer system
  capable of accommodating hundreds of users doing
  a variety of computing tasks is a mainframe.

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COMPUTERS

• A personal computer based on a microprocessor is
  a desktop microcomputer.

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COMPUTERS

• The original design of personal computers was
  based on the IBM PC design.

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COMPUTERS

• A device with a keyboard, mouse and system
  components all in one compact unit is a laptop.

TOPICS
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MEMORY

• RAM (Random Access Memory) is the main memory and
  stores data and programs while the computer is
  running. When the computer is turned off anything
  in main memory disappears. Computer can read from
  and write to this memory.
• ROM (Read Only Memory) is a computer chip that
  stores specific instructions to manage the
  computers operation. Unlike main memory, this
  type of memory is non-volatilethe instructions
  remain permanently on the chip and cannot be
  changed.

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MEMORY AND STORAGE

• BIT is the fundamental unit of information with
  just two possible values (0 or 1)
• A sequence of adjacent bits (usually 8) operated
  on as a unit by a computer is a BYTE.

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STORAGE

• Hard Disk is a rigid magnetic disk mounted
  permanently in a computer drive unit.
• A small plastic magnetic disk enclosed in a stiff
  envelope with a radial slit is a floppy disk.
• Zip disk is a magnetic disk storage device that
  has more capacity than a floppy disk. (Not used
  much)
• CD-ROM is a compact disk that functions as a
  read-only memory.

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HANDLING DISKS/FILES

• Write-protected is used to modify (file or disk)
  so that its data cannot be edited or erased.
• Format is used to prepare a disk for use on a
  specific type of drive by imprinting the disk
  with the information it needs to work in that
  particular kind of drive. Make sure you know
  what you are doing when you format a disk,
  because everything on the disk will be erased.

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• Processor speed is measured by MegaHertz (MHz)

TOPICS
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HARDWARE

• Hardware is the electronic and mechanical
  peripheral devices that make up a computer.
• The stuff you can touch!

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HARDWARE

• Hardware is the electronic and mechanical
  peripheral devices that make up a computer.
• The stuff you can touch!

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HARDWARE

• The central processing unit (CPU) is the brains
  of the computer which is housed on a tiny silicon
  chip. This is where the mathematical
  calculations and logical comparisons are done.

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HARDWARE

• Pentium is the name given to Intels P5 chip, the
  successor to the 80486.

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SOFTWARE

• Program is a series of commands and executable
  files that produce an expected result.

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SOFTWARE

• Operating system software is a type of software
  that provides an interface between the user or
  application software and the computer hardware.
• Application software is a type of software
  program that performs a specific function such as
  presentations (i.e. PowerPoint, Word, Excel, etc.)

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SOFTWARE

• A computer interface that enables a user to
  launch commands by pointing and clicking at
  graphical objects such as windows, icons, and
  menu items is GUI (Graphical User Interface)
• ICON is an image that represents an executable
  file.

TOPICS
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HISTORY

• Charles Babbage invented the difference machine.
• Grace Hopper coined the term debugging as she
  found a moth was causing the computer relay to
  not work.

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HISTORY

• Bill Gates system (i.e. Windows) and application
  (i.e. Microsoft Office) software is what made him
  rich.
• Steve Jobs and Steve Wozniak were two creators of
  Apple Corporation.

TOPICS
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• Are you ready for the test now?
• Good luck!