Laptop Definition and 285 Threads

A laptop, laptop computer, or notebook computer is a small, portable personal computer (PC) with a screen and alphanumeric keyboard. These typically have a "clamshell" form factor, typically having the screen mounted on the inside of the upper lid and the keyboard on the inside of the lower lid, although 2-in-1 PCs with a detachable keyboard are often marketed as laptops or as having a "laptop mode." Laptops are folded shut for transportation, and thus are suitable for mobile use. Its name comes from lap, as it was deemed practical to be placed on a person's lap when being used. Today, laptops are the used in a variety of settings, such as at work, in education, for playing games, web browsing, for personal multimedia, and general home computer use.
As of 2021, in American English, the terms laptop computer and notebook computer are used interchangeably; in other dialects of English one or the other may be preferred. The term 'notebook computers' or 'notebooks' originally referred to a specific size of laptop (originally smaller and lighter than mainstream laptops of the time), the terms have come to mean the same thing and notebook no longer refers to any specific size.
Laptops combine all the input/output components and capabilities of a desktop computer, including the display screen, small speakers, a keyboard, data storage device, sometimes an optical disc drive, pointing devices (such as a touchpad or pointing stick), with an operating system, a processor and memory into a single unit. Most modern laptops feature integrated webcams and built-in microphones, while many also have touchscreens. Laptops can be powered either from an internal battery or by an external power supply from an AC adapter. Hardware specifications, such as the processor speed and memory capacity, significantly vary between different types, models and price points.
Design elements, form factor and construction can also vary significantly between models depending on intended use. Examples of specialized models of laptops include rugged notebooks for use in construction or military applications, as well as low production cost laptops such as those from the One Laptop per Child (OLPC) organization, which incorporate features like solar charging and semi-flexible components not found on most laptop computers. Portable computers, which later developed into modern laptops, were originally considered to be a small niche market, mostly for specialized field applications, such as in the military, for accountants, or for traveling sales representatives. As the portable computers evolved into the modern laptop, they became widely used for a variety of purposes.

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  1. Ranku

    Laptop Freefall Protection: How Sensors Detect Falls

    An object in gravitational freefall cannot sense its own acceleration. As you know some laptops come with hard-disk protection that 'seizes up' the hard-disk when the laptop takes a tumble from your table. How do the sensors in the laptop detect it is falling?
  2. M

    Buzzing/Whining sound from speakers when connected to laptop

    Hi, when i plug my speakers into my laptop, i can hear a slight whining sound from one of the speakers. i assumed it was the speakers, however i plugged some brand new headphones in, and the same problem occurred. this leaves me to believe it is a problem with the laptop. does anyone know why it...
  3. J

    Turned my Laptop hard-drive for windows into a external hard drive,

    I can't exess files from my specfic login only the public files e.g. files that were on my desktop. Any ideas? Cheers
  4. R

    Laptop for 340 Biweekly Paycheck: Community for Programming Projects

    So, recently I've noticed, here I am reading my "first book to c++" When I'm not really busy. However at these times, I'm not at home. So I'm working on grasping concepts while not quite getting practice. So I decided I should buy a laptop. What laptop would be fabulous for a 340 biweekly...
  5. C

    Idea for using a Desktop GPU on a Laptop to Drive Internal LCD

    There are a couple of products on the market which allow you to attach an external desktop gpu to the laptop and then use an external monitor and play games using the the desktop gpu instead of the weaker gpu in the laptop. It's a great idea but it means that you must carry an external...
  6. lisab

    Are Schools Violating Privacy with Student Laptop Webcams?

    A Philadelphia school district issued laptops to each of its high school students; pretty cool idea... Students later found out that school officials could (and apparently did) turn on the web cams remotely, and watch them at school and at home. They did this without notifying the...
  7. A

    Where Can I Find a High Performance Laptop for a Fair Price?

    Right now I am running a mediocre alienware laptop (core 2 duo 2.0 ghz 2.5gig ram). Just running BOINC on this laptop heats the processor enough makes it hot enough to cause an emergency shutdown. This is due to a manufacturing (crap) flaw in the design. Thus I want a new one. Id like to...
  8. T

    Laptop Power Supply: How to Charge Battery Externally

    Greetings, Does anyone know how to use a laptop's charger to externally charge its battery? I am using a battery from an old DELL laptop to power my handheld radio. I wish to use the charger that came with the computer to rejuvenate the battery, however, the charger circuitry is smarter...
  9. 2

    How do you transfer settings from PortableApps Thunderbird to laptop?

    I haven't used Thunderbird much before, but decided to install the PortableApps Thunderbird on my 8GB USB Flash Drive and found it useful. I just bought a new laptop and think it would be nice to transfer my settings from the flash drive onto the laptop. If I say "Import" for the Thunderbird on...
  10. S

    Why is my new laptop's hard drive and RAM not fully usable?

    the laptop is supposed to have a 250GB hard drive. i was expecting it to have around 247. anyway i checked th4e specs and it says it only has a 220 gb max drive size and 197 gb is usable. s this normal? or should i complain? also the ram is supposed to be 3gb but it says only2.75 is useable?
  11. N

    Sound output on ibm laptop not working

    I had this problem before. But a friend of mind open up my laptop and fixed it. I was told that I could also reinstall sound drive for laptop , but don't know the procedures for reinstalling sound driver. I have already checked that whether the sound was muted , turns out it was not muted. What...
  12. N

    Laptop monitor mysteriously will not come on

    I have a thinkpad laptop. It will not come on. It was working fine with no signs that the monitor will cut off later. Its on a warranty, so I can get it fixed. But I don't want to go through the arduous process of packaging my laptop and waiting for a week until it gets fixed. What do you...
  13. T

    Defragging my hard drive on my windows XP laptop?

    The last time I defragged a hard drive was on my desktop computer with windows vista. My laptop seems to be slowing down slightly, I was hoping to defrag it, as it has not been for a very long time. I don't know where to go to access this feature in windows XP. I use "search" in the start bar...
  14. S

    LaTeX Can I Install Latex on My Laptop for Free?

    Hi, I want to install the Latex software on my laptop but i don't know where to do this from. is there a good website to do this. also, is it possible to install it for free? i don't want just the trial, i want it forever. if it's not free, how much would it cost? Thank you
  15. J

    Get the Right Laptop for College & Gaming - Under $900

    Hey guys, I'm in the market to get a laptop. I don't want to spend too much money, but I want to get a decent quality laptop that I'll be able to play a few games on without any trouble. I'm going to be entering college with a double degree in electrical engineering and physics too, so it has...
  16. F

    How Can I Remove Linux from My Laptop While Keeping GRUB Intact?

    How do I get linux off my laptop and reclaim that partition without having to do a fresh Windows install and without damaging the boot manager (GRUB)?
  17. H

    Can I Safely Use 3.16 Amps with My AC/DC Laptop Power Supply?

    Just a quick question for you guys out there. I have an AC/DC laptop power supply. I was thinking of using it for a few projects. Th power supply's output is 19 volts and 3.16 amps. My question is is 3.16 amps the max current that the power supply can take without frying? I mean the number of...
  18. L

    Laptop for a Physics major: Lenovo vs. Mac vs. Acer

    I'm an undergraduate at Stony Brook University (safety, but i had no choice) and I'm planning on buying a laptop soon, and I've narrowed down it to either a Mac, Acer, or Lenovo. I'm going to major in physics, and I'm not sure what my second major will be (math, engineering, astronomy) 1) 13...
  19. S

    Sufficient hard drive space in a laptop for engineering?

    I have a laptop at at the moment but I'm afraid that I chose the wrong one. Its a 16in, 7.1lb monster with a battery life of a measly 2.5hr max. I could upgrade the battery but it would add over a pound in weight and make it even bulkier though. I'm thinking about returning it (if I can) and...
  20. F

    I having a laptop Everytime I power up it I always hear a beeps

    I having a laptop Everytime I power up it I always hear a beeps sound repeat again and again. I have to reboot, then it is fine. but the next day when I tunr on it again, the beeps comes back. sadly I doubt it is probably time my comuter reach its lifespan.
  21. zoobyshoe

    Is My Laptop Possessed?

    I didn't post all day yesterday because the day before, while I was googling images of syphilis, my laptop suddenly experienced general paralysis of the insane, and completely shut down. (If case you were wondering, it takes five pages of syphilis images to take a computer from initial infection...
  22. D

    Can anyone explain why my HP laptop's battery suddenly discharges twice?

    HP laptop battery problem! hi, does anyone know why my battery on my HP laptop doesn't recharge when it is plugged into the mains?? It says it is 0% and charging but never actually increases. If you unplug the AC adapter it doesn't turn itself off but keeps warning me that it is at 0% and...
  23. G

    Which Laptop Should I Buy for Programming?

    i'm planning to buy a new laptop... i'll be using it for programming and other computing applications like matlab... friend's recommend 4gb RAM, dell, hp or mac... but another friend tells me that toshiba is better... what I'm sure right now is that i must get a laptop with 4gb RAM and...
  24. A

    Which laptop will be better for a physics major: Macbook vs. Sony

    I am going to buy a laptop very soon. I think that I have narrowed it down to two laptops: Apple MacBook 13.3" 4.5lb. Processor:Intel Core 2 Duo Mobile 2.4GHz RAM:4GB DDR3 Hard Drive: 250GB 5400rpm Sony VAIO 13.1" 3.4lb. Processor:Intel Core 2 Duo Mobile 2.4GHz RAM:4GB DDR3 Hard...
  25. U

    Can a laptop charger be made vampire-proof with a timer and check circuit?

    I am trying to build a vampire proof laptop charger. Vampire proof meaning that the charger will not consume power when it is not needed. The simplest way to do this is to unplug the charger. However the charger is often in hard to reach places, and unplugging it means climbing over...
  26. W

    Choosing the Right Device for Grad School: PC or Laptop?

    I'll be starting grad school in July and my current PC is a good 3+ years old. I will leave it here so the family can use it, but that means I'll have to buy something for myself. I don't know if I should buy a laptop or PC, though. I prefer PC's, as I can customize them how I want and when...
  27. T

    What is the absolute fastest laptop CPU right now?

    I was just wondering what the absolute fastest laptop CPU that is currently available is, and could you link me to information about it?
  28. berkeman

    How disable double-taps on laptop touchpads? Ack

    I have a new Toshiba laptop (with Vista, sigh), that has a seriuos user interface glitch problem with it's mouse-replacing touchpad. The main problem, as far ask I can tell, is that it interprets some fingertrip drags as double-taps part-way through, and sends me off into the weeds. I've...
  29. R

    Microcontroller to Laptop through RS232-USB Converter

    HI, I'm currently using a microcontroller 16f877A. The Tx and Rx pins of my microcontroller will output either 1 or 0 respectively. The microcontroller is connected to my laptop using RS232-USB converter. The microcontroller has been programmed and the connection was tested. May i know what is...
  30. C

    Can I run my Laptop from my car's 12V DC ?

    Ok, I know DELL sells these really expensive DC to DC 'adapters' that can run my laptop. I can also run it from a DC to AC converter and plug my charger into that. But obviously, wouldn't it be simply a matter of having the right cable ? I'm just wondering what that DELL cable really does...
  31. B

    Trouble to get export videos from laptop to tv

    Hello, I have a little problem. My TV has no S-Video port and my DVD player has no USB and memory card ports. When I want to watch divx movies I have to burn them everytime on DVD's. I can't afford a new DVD player or TV at the moment. Is it possible to connect my laptop with my DVD player...
  32. J

    Why won't my laptop connect to my TV using an S-video adapter?

    I am trying to connect my laptop to my tv. My laptop has a port (if that's the right word to use here) to connect an S-cable to it, but my TV doesn't (it only takes the red, yellow, and white cables). I bought this an adapter to allow my TV to take in S-cables. This is the product description...
  33. R

    Laptop Recommendation: College Needs 3+GB RAM, 250+GB Hard Drive

    I want to buy a laptop with 3+GB of Ram, a 250+GB Hard Drive, and a good processor. I am going to be using it for College, what could someone recommend.
  34. S

    Which Laptop Charger is More Efficient for a 65W Rated Laptop?

    A laptop charger rated 19V 2.64A and another rated 19V 3.42A what advantages would one have over the other.If I am using it for a laptop rated 65W
  35. JasonRox

    Why is My Old Laptop Failing to Reformat with Windows XP?

    Ok, I tried reformatting my laptop with my Windows XP CD. Here's what happened... I boot from the CD, and everything works fine. Delete partition and start formatting. It goes half way through and then tells me I'm missing some DATA file, then I retry and retry, but never works. Also, the CD...
  36. A

    Where do I buy a nice laptop for

    So I wondering where to buy a laptop from for a nice deal. Prefer Core 2 Duo. 2.0 or + GHz, 2Gb or + RAM, 14 in. or + screen should have Any help?
  37. B

    Recycling a Laptop LCD - Tips & Tricks to Get Started

    So I have an LCD from a laptop, I had another thread going where I was trying to fix this laptop. I learned a but from the experience but no luck, motherboard is toast. I was doing some reading and there has been some successful attempts to recycle the LCD and have it run from another...
  38. B

    Help with comparing laptop models

    I'm about to buy a refurbished laptop because there cheap, I've been using a refurbished gateway for a year no now significant problems i just want better hardware. Now one model is INTEL and one model is AMD. So if anyone wants to look at these two models and give there unbiased opinion that...
  39. Andre

    Troubleshooting a Dead Laptop: Common Issues & Solutions

    :frown: So I returned to my laptop (Compaq Pressario A900) after a coffee break this morning and found it to be off. I was quite sure I did not shut it down, Anyway, I attempted to restart it. After some initial startup noises it shut down again. :bugeye: So hit start again toggling F8...
  40. W

    Touchpad Safety: Is Your Laptop Putting You at Risk?

    I've always felt my finger "tearing" when I used my laptop's touch bad. I now noticed that I do in fact have a cut there. And on my 2nd finger, which I've also used on the touch pad. Do you think this thing is out to get me? If it matters, I use Linux. Should I go back to Windows? Do...
  41. R

    Troubleshooting Laptop Battery Detection Issues

    Hi, So I have a Sony VAIO laptop, and recently the batterys decided to stop being recognised by the computer (if I go to the power meter in the control panel, it reads the battery as "not present"), so I run off of AC power and disconnect the lead, the laptop just turns off. The problem is...
  42. F

    Best Laptop for Engineering/Math/Physics Majors

    As a prospective engineering/math/physics major in college, which laptop should i get? I want one which can last as long and can run eng/math/phy stuffs?..
  43. S

    My Laptop Hurts My Lap - Solutions & Advice

    I just purchased my first laptop computer about a month ago, and I am noticing some discomfort in my (male) lap. At first I thought perhaps it was due to the heat. But after moving it out of my lap to say a desk, I still noticed discomfort. I am thinking *maybe* it is related to the wireless...
  44. S

    How Do Lithium Batteries Power Our Devices?

    How do these batteries work? Are they simply capacitors being connected in a parallel configuration? What is the difference between a laptop and a cell phone battery?
  45. L

    Just had my new Lenovo Thinkpad T61 laptop delivered to me

    It's a nice machine. Too bad it arrived broke. The screen lid's latch is DOA. When I push the release lever to the right it doesn't spring back. Also, the clips on the left of the screen do not release when the lever is pushed. I have to release it by sliding a credit card under the screen...
  46. M

    Is Overcharging a Laptop Battery Dangerous?

    Is it harmful to overcharge laptop's battery? If it is , then why?
  47. Q

    Interference on sound and monitor when I plug my laptop in to charge.

    I use my laptop as desktop, run a monitor on it and speakers etc... anyways when I plug it in it causes interference in the monitor and sound. Anyone know what causes this?? And how to remedy the problem.
  48. B

    Trouble with Laptop: Battery Not Functioning After Unplugging

    The strangest thing happened to my laptop. I can turn on my laptop with the battery outlet attached to my laptop. But, even though my battery outlet has been attached to my laptop for an hour or so , and I unattached my laptop, I am no longer able to turn on my laptop. A battery is attached to...
  49. U

    Going to school next year: need a laptop

    I know this is such a vague question, but I really just want some ideas for a new laptop for school next year. I'm looking more at the average price range, but if there's a more advanced product that looks like it would be worth the dough, I might think about it. I'm open to any and all...
  50. F

    British army officer leaves laptop at pub

    http://www.upi.com/NewsTrack/Top_News/2008/02/12/british_army_officer_leaves_laptop_at_pub/2351/ As a Canadian I can't really point & laugh. Back in the 1980s Canada's minister of defence took a big folder full of sensitive NATO documents with him to a strip club in Germany. (at least he...
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