HP5430A 18GHz微波计数器维修+测试 / Microwave Counter Repair+Testing

这其实是2019年11月完成的事情,当时拍了一些照片记录,不过因为拍摄环境限制拍得不是很好,就没发出来。最近本科快毕业了,在考虑离开学校的事情,整理了一下自己在学校外租的,专门用来当实验室(事实上更像是仓库)的出租屋。这台仪器作为所有收集到的仪器中个人最喜欢的一台,作为一个纪念,还是发出来了。

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HP Journal 封面索引 / Cover Art Portfolio

HP Journal以及与其相同时期的其他公司发布的刊物普遍有精心设计的封面。这些封面采用道具制作,直接拍摄并进行了一些胶片时代的后期处理和特效装饰,有一种特殊的美感。同时,HPJ每一期的封面都至少对应这一期中一半的内容,用作索引的话一眼就能看出这一期是关于什么的。出于这两个原因,在接下来的时间里我会截取每一本HPJ的封面并缩小后贴在这个文章中,就当作是一种审美的实行过程吧~♪

1965年以前的HPJ一般没有封面,因此1949-1964年的内容等到其余更新完之后再去更新。为了节约服务器资源,所有的图片都被压缩到了512px的宽度。

Source: http://hparchive.com/hp_journals

国内源: https://pan.baidu.com/s/1_EZl7V71U2as9Ct-RGKY7w  提取码:dc0z

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Rebuilding a Battery Pack (PC-9821Lt2)

WARNING  -  WARNING  -  WARNING

Lithium battery pack is the most hazardous component of a modern consumer device. An attempt to tap into it can lead to an explosion or fire. What's worse: DIY battery packs are not thoroughly tested in labs and thus have no guarantee. Even without human error, it is possible to overheat and start a fire when charging or operating. Follow this article at your own risk.

WARNING  -  WARNING  -  WARNING

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[OPNA] An Analysis of The P.M.D. Music Data Format (Mostly the "Rhythm" Section)

Greetings to all the new comers.

This article is based on Github repo: ValleyBell/MidiConvertes and Mistydemeo/Pmdmini. Special thanks to オップナー2608 from PC-9800 Series Central Discord Channel for helping me.

Meh... a detailed description of this little project will be covered in a future article (If I actually would do). Basically, I'm trying to make a portable music player / midi synth based around YM2608. I expect this project to take forever to complete...orz

Let's get our hands dirty quick!

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