Archive for the ‘電腦’ Category

wolfram alpha

五月 20, 2009

研發 Mathematica 軟件的 Wolfram 最近推出了一個全新的 search engine : Wolfram Alpha.

起 初不怎看好,因為我對 mathematica 的不滿與日俱增,實在不明白為何每個 release 都變得比之前難用,加些無無謂謂的 fancy feacture,user interface 越來越糟糕。現在我寫 program 是為 get things done,早就不再和 mathematica 折騰了。

不過 wolfram alpha 的確幾好玩,不能說可以整死 google,不過肯定能殺出條血路。

true mathematica fashion..!:

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流感數字

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估唔到連終極問題都難佢唔到….:

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廣告

Mac vs PC war, 更新

四月 19, 2009

之前 MS 的 PC hunter 廣告一石激起千重浪,Mac和PC fans 各自交鋒,以下是 Mac fan 的辯白:

Mac vs. PC: What You Don’t Get for $699 – BusinessWeek

Yes, $699 beats the $2,800 you’d pay for a Mac with a 17-in. screen. But when it comes to PCs, there’s still a great deal more to buy.

First, there’s security software. The PC in question comes with a 60-day trial Norton Internet Security 2009 from Symantec (SYMC). After the trial runs out you’ll pay Symantec $50 a year to protect your PC (and up to two others in your home) from all the nasty viruses, worms, and other malware lurking on the Internet. That’s $150 over the three years Lauren is likely to hold on to her PC. No need for antivirus on the Mac.

Next, let’s say something goes wrong on the computer once the warranty expires and that it requires the intervention of a third party. Geek Squad will charge you $129 just for a diagnosis. A diagnosis from the Genius Bar in Apple’s retail stores? Free.

Then there’s iLife, the suite of multimedia tools that comes standard on the Mac. With iLife you can organize photos and home movies and turn them into watchable DVDs. Garageband helps you create your own music and another iLife element aids in Web site creation.

免費的防毒軟件不少,電腦有問題不一定要找 Geek Squad…. 至於所謂的多媒體軟件,免費的大把。最後到 Apple 官方發言人:

“A PC is no bargain when it doesn’t do what you want," Apple spokesman Bill Evans says. “The one thing that both Apple and Microsoft can agree on is that everyone thinks the Mac is cool. With its great designs and advanced software, nothing matches it at any price." Microsoft declined to comment.

其實簡單的經濟原理告訢我們,PC 的性價比一定比 Apple 高。如果一個人決定買 Apple,就只能從一個生產商買;但若決定買 PC, 品牌有很多選擇。同一檔次的電腦都有很多競爭,價格必定不斷往成本價方向走;但是 apple 只是 marketing 的考慮。

另外,但PC 一樣有很多 high end 的型號。用 $2,800的話,可以買兩部。

Live search algebra

四月 13, 2009

Lifehacker – Let Live Search Do Your Algebra – Live Search

OMG!  幾時可以做微積分,就不用 mathematica 了。

Mac

四月 13, 2009

從來沒有興趣用Mac,見過有部 macbook,連 projector video output 都要另外花錢買。

PC 的生產商多,一般的 PC 價錢比 mac 便宜,功能比 mac 強。

apple 的 ipod 也是,明明只是普通不過的 mp3 player,都要賣 $100-$200,非常 overpriced。

cpu

四月 11, 2009

Intel Begins Applying ‘Stars’ Ratings to Microprocessors – Lab Notes by ExtremeTech

以前 cpu 型號好簡單:286, 386, 486… 數字越大就越快。但係不知從什麼時侯開始,就有 pentium, celeron, core, core2, core 2 duo…. GHz 大不代表快,還要看L1 L2 cache, 多少個 core…  真是頭都暈。無可否應 cpu 產品這幾年間有很多突破,新功能層出不窮,但像我這樣的用家根本不 care,只要用起來夠快就好。

不過 intel 將推出的 star rating有個問題,就是 cpu 越出越快,現在是五星,明年要轉四星?

還有要看你用電腦來做什麼。如果只是上網打字,三星和五星的分別恐怕不大。