2010 1

Laptop power usage

I just got a digital wattmeter. Had no idea about these until Google PowerMeter, but now, they’re all the rage. Mine’s a pretty simple model and all  I plan to do with it is play around with a few household gadgets. My first target, obviously, was my Dell Latitude E5400. The statistics are interesting: Power … when… 0.3W Laptop is switched off. The adapter must be consuming the power 1.3W Laptop is on standby. 12W The lid is closed, and no applications are running. 18.5W The laptop is on, the lid is open, and no applications are running 25W The laptop is writing to the hard disk 34W One CPU is fully utilised 41W Both CPUs are fully utilised Looks like the display and hard disk each consume about 6.5 watts each, while the CPU consumes a whopping 15 + 7 = 22 watts. ...

2008 1

Reading books on a laptop

I have the habit of reading books on the screen. It’s something that started from the early 90s, when I got a copy of The MIT Guide to Lockpicking. Since I didn’t have access to a printer, I’d spent hours poring over the document on the screen. And then I discovered Project Gutenburg… I’ve heard many people ask if I have a problem with this. Personally, no. I’ve been staring at screens from the age of 12, and I’m quite used to it. My job requires me to stare at a screen for most of the day anyway. (I’m not saying there’s no a strain on the eye. My eyes are red at the end of the day. I don’t know if they would be less red if I’d been staring at paper instead of a screen. But my glasses have remained roughly the same power over ~15 years, so it’s probably not ruining my eyesight much.) For those who are like me who reads all the time and spends a lot of more time facing their laptops, you might want to check this sd card, a very good quality card that can be handy in the future. ...

2005 1

Transparent laptop screen

Transparent laptop screens. Quite clever, actually. via Dhar Comments S Anand 30 Mar 2005 6:15 am: More transparent screens at Flickr

2002 2

Internet on flights

Insight from a NY Times article on how the Internet can be accessed from flights: the reason you shouldn’t use a laptop on a flight during take-off and landing is not because of electrical interference; it is that the laptop could be a dangerous loose flying object in case of turbulence. Now, that makes more sense.

Not such a good idea

Notebook computers are not such a good idea after all.