Portable PC

Objectives :

  • List the types of portable PCs
  • Explain the features of a laptop
  • Explain laptop design
  • List the different components of a laptop
  • Identify the laptop input and output devices
  • Troubleshoot a laptop

Types of Portable PC :

Laptop - Portable computer that can perform all the tasks of a desktop computer


Notebook - Small and lightweight version of a portable computer. use flat panel technologies to produce a lightweight display screen


Subnotebook – Smaller and lighter version of notebook. Generally have smaller keyboards and screens as compared to notebooks and usually have external drives


Palmtop - Also known as Personal Digital Assistants (PDAs) that can fit in the palm of a hand. Uses pen/stylus for input. Most palmtops do not have disk drives because of their size limitations.


Features of Laptop :


Laptop Design :

Most important point to be considered while designing a laptop is its portability

Design characteristics of a laptop are :

  • Size and weight
  • Screen size
  • Performance
  • Battery life
  • Onboard Components
  • Ports and sockets

Laptop Components :


Memory – Use SODIMM and size varies between 16MB to 1 GB

Microprocessor – Has multiple sleep modes and operates at lower voltage

Hard Drives – size varies from 6 to 80 GB

Floppy Drives

CD and DVD Drives

Batteries - different types of batteries used by laptops include nickel-cadmium, lithium ion and nickel-metal hydride out of which lithium ion batteries are most popular

Device card (PCMCIA card) - used to connect devices such as a fax, modem or memory device and has a 68-pin connector

Infrared ports

I/O Ports

A/C Adapters

Different Types of PCMCIA Cards :

Type I – Used mostly for connecting to memory devices

Type II – Typically connects to a modem, a SCSI device or a sound device

Type III – Used to connect to hard drives

I/O Ports :

Laptop connects and communicates with other devices with the help of the I/O ports

Different I/O ports of a laptop :


Laptop I/O Devices :

Keyboard - Small in size and mostly have additional features that enhance user comfort and most of the keyboards do not have the numeric keypad


Touch pad - Input device which is little larger than credit cards


Trackpoint - Small button located between keys on laptop keyboard used to move cursor on the screen


Display screen – Use Liquid Crystal Display (LCD) technology and are are generally between 12 to 17 inches in dimension


Troubleshooting :

Software or hardware problem may occur while using a laptop

Systematically follow troubleshooting steps to detect the cause of the problem and repair it

Different problems that may come across are :

Laptop does not start after turning on

Ctrl+Alt+Delete is not working

CD/DVD drive problem

Laptop is slow and pop-ups continually plague Internet browsers

Blue screen appears with an error message

Laptop shuts down unexpectedly

Battery is running down very fast

#Portable_PC #Types_of_Portable_PC #Laptop #Notebook #Subnotebook #Palmtop #Features_of_Laptop #Laptop_Design #Laptop_Components #Different_Types_of_PCMCIA_Cards #I/O_Ports #Laptop_I/O_Devices #Troubleshooting_Portable_PC #Ctrl+Alt+Delete_is_not_working #CD/DVD_drive_problem #Blue_screen_appears_with_an_error_message #Laptop_shuts_down_unexpectedly #Battery_is_running_down_very_fast #Laptop_does_not_start_after_turning_on

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