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Computer (Type of productivity programs (:bouquet:Word-Processing and…
Computer
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Parts
Input Devices
Keyboard, mouse,
microphone, scanner, webcam
Output Devices
Monitor, Speakers/Headphones, Printer*
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Hard Drive Ports and Connections (USB, Firewire, etc.)
Storage Devices
:arrow_forward:Hard Disk
:arrow_forward:Flash Drive
:arrow_forward: CD-ROM
:arrow_forward:DVD-ROM
Ports and Connections
:soccer:Universal Serial Bus (USB) Port
:soccer:FireWire (similar to USB but faster)
:soccer:Network Port (Ethernet)
:soccer:Parallel Port and Serial Port
:soccer:Display Adapter
:soccer:Power
Role
Operating Systems
:star:Most important software
:star:Controls and manages the hardware
:star:Ensures computer is functioning properly
:star:Text-based or Graphics-based
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Programs
Hardware and the operating system together
are referred as a platform
:check:programs allow you to perform tasks
such as writing letters, doing calculations, or
sending e-mail messages
:check:programs allow you to create illustrations,
play games, watch movies, or communicate with
other computer users
Data
:lock: can be in the form of text, graphics, audio,
or video depending on the type of program.
:lock:Program processes the data and displays the
output on the screen
:lock: save this output in a file it can be an audio file, a text file, or a video file.
Networks
A group of computers and associated devices that are linked
together to facilitate sharing information
A typical network has the following three components:
:fire:Server
:fire:Workstation
:fire:Communication channel
LAN
:red_cross: Connects devices within a limited area
:red_cross:Includes computers and shared resources
WAN
:green_cross: network that connects devices in geographically separated
areas
:green_cross:Connects networks across different countries
Ex:-
Internet
:recycle: worldwide collection of public networks that are
linked to each other for information exchange
:recycle:An intranet is similar to the Web but is accessible only to
authorized users of the organization
Types of computer
Dekstop
:red_flag: Made up of individual components
:red_flag: Not portable
:red_flag:Can easily be
replaced or upgraded
:red_flag:more memory, a larger hard drive, more ports,
and a bigger display than laptops and other portable
computers.
:red_flag:Can run continuously for long periods of time
Laptop
:black_flag:Lightweight personal computers
:black_flag: Called notebook computers,small and portable
:black_flag:Run on electricity or on batteries that can be
recharged
:black_flag:Consume more power than desktop computers
Handheld
:!:used for specific everyday tasks,
such as managing personal data
:!: perform basic word-processing
activities and help you access the Internet
Tablet
:explode:write directly on the screen by using a tablet pen
:explode:use the tablet pen to perform mouse
functions
Computer Performance
Hard Disk Factors
:eight_pointed_black_star:Differ in storage capacities as well as their speed of
data storage and retrieval
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CPU Speed
:eight_pointed_black_star:Rate at which the CPU can perform a task,such as moving data to and from RAM, or performing a numerical
calculation
Role of Memory
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Nonvolatile Memory:
The content stored on this type of
memory is retained after the computer is turned off
Computer programs
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:shamrock:Chat programs
:zap:Send and receive messages immediately
:zap: communicate with several people at the same time
:zap:Two other types of chat programs :black_medium_small_square:voice chat
:black_medium_small_square: video chat
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Terms used to measure memory capacity
:open_mouth: Bit
:open_mouth:Byte
:open_mouth:Kilobyte
:open_mouth:Megabyte
:open_mouth:Gigabyte
:open_mouth:Terabyte
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