This is what is known as a keylock, and these were a standard feature on tons of computer

這就是主機鎖

cases from 1984 to around 1994.

這在1984至1994年，曾經是許多電腦的基本配備

Alongside the turbo button, the presence of a keylock is one of those things that instantly

除了加速按鈕，主機鎖就是哪些看了就知道

dates a personal computer to that time period.

個人電腦年代久遠的象徵。

But what exactly did they do, where did they come from, and why aren’t they so commonplace

但這到底有什麼用？為什麼有這些鑰匙

on the average home computer anymore?

他們為什麼不那麼普遍了呢？

To answer the first question, keylocks usually did exactly what you’d expect: they locked

若回答第一道問題，主機鎖當然就是如你所預料的

the computer with a key.

將電腦用鑰匙鎖上

How exactly it would do this depends on the type of lock and the wiring inside, but most

如何運用這個機制完全取決於鎖的種類、和內部的線路

of the time it would prevent people from opening the case, prevent the keyboard from being

很多時候都是防止別人打開主機盒

used, or a combination of the two.

防止別人使用鍵盤，或兩者兼施。

For example, the LGR Woodgrain 486 has a keylock that only affects keyboard input.

例如,LDR 的木紋486有一個鎖可以影響鍵盤的輸入

When you turn the key, it shorts a jumper on the motherboard, which tells the computer

當你轉動鑰匙，主機板的一個跳線將會斷絕鏈接

not to accept any signals from the keyboard.

因此電腦就不會再接收鍵盤的訊號

It doesn’t stop anyone from just opening up the case and removing the connection between

這當然沒辦法防止別人打開主機盒然後移除主機板與主機鎖的連接

the keylock and the motherboard of course, but it prevents the most casual of shenanigans

但是這將有效防止許多平白的無知行為發生

from taking place.

但是這將有效防止許多平白的無知行為發生

However, with certain other computers it’s another story, since the keylock physically

但是對某些電腦卻不是這麼一回事

slides a piece of metal into place when activated, preventing the case from being opened at all.

因為鑰匙鎖需要物理性的將一片金屬片插入，當被瑣上，可以防止主機盒被打開。

Sometimes this also locks down the keyboard, sometimes it disables hard drive access, and

有時候這個也可以鎖死鍵盤，有時候可以瑣死硬盤的進入，也有時候

other times it might even prevent the computer from powering on in the first place.

甚至防止電腦被啟動

But the method of disabling keystrokes and locking down the case seems to be the most

但是防止鍵盤輸入以及鎖死主機盒似乎是最常見的用法

common. And the first mainstream appearance of this type of keylock was from IBM in 1984,

有關的鎖頭在1984年最為流行

introduced with their 5170 model, the IBM PC AT.

IBM在他的5170型號上的電腦就用上了這個鎖頭

To quote the November 13th, 1984 issue of PC Magazine, the AT provided “the first real

在1984年11月13日的電腦人雜誌 ( PC Magazine ) 就說有關的IBM PC AT 5170

system for allowing executives to sleep at night: a hard-to-duplicate ‘tubular’ key

是第一個真正讓主管在晚上安眠的系統

locks all but keyholders out of the system.”

一個難以複製的圈形鑰將所有非鑰匙持有者拒絕在外

This was a big deal because the original IBM PC and PC XT were utterly trivial to get inside of. All you needed to

這在當時很重要因為原裝的IBM的PC以及XT是超級容易被打開。

do was loosen a few screws on the back of the case and you could mess around all day.

你只需要鬆下背後的幾個螺絲就可以打開來胡鬧一天了。

And there was nothing preventing anyone from using the computer at anytime since there

而且還無法阻止任何人在任何時候使用有關電腦

were no passwords or user profiles. And this was a problem for businesses.

因為當時並沒有所謂的密碼也沒有用戶賬號。這對商業用戶是一大難題。

So IBM contracted the Chicago Lock Company to address this, and they went with their

所以IBM就尋求了芝加哥鑰匙公司去解決這個難題，他們要芝加哥公司的

patented tubular lock, a compact type of cam lock that used a cylindrical key, the same

特製並有專利的圓形鑰匙，一個很密集的圓形鑰匙

kind often used on vending machines, pinball tables, and alarm systems.

這種鑰匙常見於自動販賣機，彈球桌，以及保安系統。

In reality it was a minimal security measure more for peace of mind than anything else, basically

這的確是只一個最簡單讓人安心的保安措施，而沒有實質的保安。

just there to prevent casual stuff from happening that you don't want to,

基本上只是防止一些你不想見到但又常見的錯誤發生。

but it served its purpose for the business market.

但是對於商戶卻有用。

IBM also introduced the Personal Computer Keylock Option for IBM PC and XT users around

IBM也有提供這個個人電腦鎖的選項給PC以及XT的用戶，幾乎

the same time, but this was a bit different.

是同一時間發布，但是卻有些不一樣的功能

Instead of disabling keyboard strokes, this thing locked the computer from being powered

這個鎖他卻不鎖死鍵盤輸入，而直接防止電腦被啟動。

on at all!

這個鎖他卻不鎖死鍵盤輸入，而直接防止電腦被啟動。

Connected to the key mechanism was this little arm inside that grabbed the power switch,

和鑰匙機關連接的有一個臂手會勾著電腦的啟動裝置

and when you turned the key it would control the power of the computer.

當你轉這個鑰匙會控制電腦的電源輸入。

Not only that but it had a steel plate that clamped down on the case, preventing the thing

不僅如此，而且這個鎖還有一個鋼盒

from being opened, and it even had a lock for the power cord itself so it couldn’t be unplugged.

這可以防止被打開，而且他還有一個連接電源線的鎖，所以可以防止別人拔開電源線

And naturally, when IBM did something back then, everyone else had to follow, and the

而自然的，IBM當時所做的，所有人都會跟隨

age of the keylock was born.

而鑰匙的時代就開拓了

Not all of these cloned keylocks were as robust or secure as they could’ve been though, and it was

不是所有的複製鎖都是那麼的堅固以及安全

quite often that one tubular key would unlock a variety of computer cases from all sorts

而很多時候一把鑰匙可以打開

of manufacturers.

多家甚至不一樣款的電腦

Sometimes they’d use a more traditional key instead because of this, and while this

也因為之前的原因，有時候他們用更常見的鑰匙而不是圓形鑰匙

could be easily copied at any hardware store, it was at least somewhat unique to the system.

雖然這個鑰匙可以更容易在五金店被複製，但是至少這個常見的鑰匙是獨一無二的。

Unfortunately, this also meant that if the keys were lost while the keylock was engaged,

而不幸的也意味著，如果不見了鑰匙，但是電腦已經被鎖上了

using or opening your computer became a real pain in the nuts, and it’s not uncommon

想要使用或打開你的電腦真的很蛋疼，而且並不是不常見的

at all to find a used vintage PC with a keylock and no keys.

很多時候有很多舊電腦有這個鎖卻並沒有鑰匙

There were a few other lock options for computers as well, like this one that locked down the

其實鎖頭還有別的用處，就如這個

surge protector.

鎖死脈衝保護機器

Instead of locking down

不是鎖死電源開關，

the power switch it’d lock down the box that all your components plugged into.

而是直接鎖死你所有機器插電的機器

More exotic computers like this SGI Indigo2 used a metal bar with a hole in it, and the

有一些國外的電腦例如SGI Indigo2就用一個有洞的金屬條

idea here was that it prevented opening the case by sliding it through the middle of the

他的想法是防止打開主機盒，你將有洞金屬條在主機中間穿過

computer, and you’d place a padlock through the hole on the other side.

然後在另一邊用大鎖頭鎖上

There were even options for locking down access to the floppy disk drive alone, with a rather

而且以前還有一個選項是鎖死軟盤，雖然

silly-looking disk-shaped lock device with a key awkwardly sticking out of it.

這個使用一個較為奇怪且滑稽的鑰匙，鑰匙會在外面突出

In the end, the thing that really ceased the need for a keylock was software, at least

最後，讓鑰匙絕技的原因其實是軟體

when it comes to most everyday home consumer PCs and not counting exceptions like servers,

當然這只包括一般家用電腦而不是如特例的伺服器之類的

workstations, and enthusiast cases.

工作伺服器或特殊電腦之類的

BIOS setups started including a password option on bootup to prevent unauthorized tampering

BIOS裡面也開始加入密碼防止無授權的胡鬧更改

and operating systems began including password-protected user profiles.

作業系統也開始加入賬戶以及密碼

Data encryption was also becoming more common all the time, so even if a user was able to

資料加密也變得更常見，所以即使用戶

get past the flimsy Windows password check, sensitive files could still be protected by

得以繞過微軟的差勁密碼檢查，敏感密碼以及文件還是可以得以保存

a robust algorithm.

因著強大的計算法

Plus, home users more often than not didn’t want or need a keylock at all, since it was

而且家用電腦用戶很多時候都不想要有一個鎖

only themselves or their family using the computer anyway.

因為通常就只有他們或他們家人在用這些電腦

Of course, it’s a different story when it comes to laptop computers since those are

當然，筆記型電腦就不可以同一而喻

portable and easily stolen.

因為筆記型電腦的可移動性以及容易被盜

Many laptops still include a physical lock option, often from Kensington, but even then

所以很多筆記型電腦還是有個物理鎖的選項，很多時候都是Kensington鎖，但是即使如此

it’s usually an extra purchase and not something that comes packed in with the system itself.

這個鎖是需要額外購買而不是內置的。

And that is the gist when it comes to computer keylocks.

而這就是電腦鎖的要旨

They served their purpose for a time, and made their way into homes and businesses for

電腦鎖在當時有他的用處，並且在個人以及商業電腦上

years, even though most people probably never even bothered with them.

用了多年，即使當時有很多人都不以為意

Yet for some reason I still like using these things, even though I have absolutely

但是我還是很喜歡用這些東西，即使

no logical reason to do so.

這完全沒有邏輯可言

It feels nice and nostalgic, just like pressing in a turbo button or handling a floppy disk.

電腦鎖讓我感覺美好以及懷舊，就如按上加速鍵或者拿著軟盤

Sure it’s kinda pointless, but anytime I use a computer with a keylock, I can’t help

當然這很沒有用處，但是當我在用著有電腦鎖的電腦時

but mess around with it for a minute.

我都會玩弄一番

It’s a neat feature to look out for and mess with if you’re interested in classic

這個功能是很值得尋求，尤其是你

computer collecting, so keep an eye out for a machine with a keylock if you want the full

喜歡復古的電腦收藏，所以你想要得到更完整的體驗

experience... just be sure it comes with the friggin' keys first.

一定要找這些鎖，當然也不要忘了記得找到鑰匙

And if you enjoyed this video on keylocks then perhaps you'd like to see my video on turbo buttons!

如果你喜歡我這個電腦鎖的影片你也許會喜歡我加速鎖的影片！

It's a somewhat related topic and I think this stuff is fascinating.

那個影片的課題也很關係到這個影片，而且我覺得很有趣。

And as always thank you very much for watching LGR!

就如往常，感謝你觀看LGR的視屏！