**External link to the website except written in Japanese
I bought a new PC keyboard* produced by Sanwa Supply (サンワサプライ) (2280 yen) at Yodobashi Camera, Akihabara for my laptop PC because it was too small for my hands to type its keyboard.
(On the photo above on your right side a black and white object is my cellular phone.)
The new keyboard has no ten key therefore it is very portable and useful.
And this is the most expensive among my keyboards.
From left to right: the one (PS/2) accompanied with my desktop PC; the second one (PS/2) produced by Sanwa Supply for which I paid 100 yen at Akihabara because it had been displayed at a store; the third one (maybe 780 yen) (USB) with the logo of "HP" (Hewlett-Packard); the fourth one (PS/2) (500 yen) with the logo of "IBM." The latter two were bulk products therefore cheap. And now I am using this IBM keyboard for desktop PC.
On this photo above (1180 yen) is the soft (or limp?) waterproof keyboard (USB) made from silicon but not useful for me therefore I have not used it any more (also see here*.)
And you might want to ask me whether I need so many keyboards. Yes, I need not these keyboards shown in this entry except the IBM one and the one I bought today.
by the way, at my laboratory of the university I use another keyboard which my friend Canon gave me before.
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