Article View: comp.windows.misc
Article #1218Re: replacing the desktop metaphor
From: The Cybermat Rider
Date: Sat, 31 Dec 1988 08:31
Date: Sat, 31 Dec 1988 08:31
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I just thought of another (possibly) restrictive factor with respect to RF-transmitting keyboards: power requirements. I assume that the keyboard would have an on-board power source (probably a battery pack), as I don't know of any power transmission systems whose receivers are small enough to fit in a keyboard. Therefore, power drain would become an important consideration. I know from personal experience (with IR remote controls, no less) that IR LEDs draw just a little power, and even considering the number of characters transmitted during an average session, I'm sure it wouldn't be too difficult to develop a battery pack that would allow activation of an IR LED at least 10 billion times (rechargable battery packs would be even better - just set it down in a special charging tray when you've finished). However, I'm not so sure about power requirements of RF transmitters. Can anyone with practical experience make an educated guess as to the power drain of a miniature transmitter (in the context of a wireless keyboard)? ---------------------------------------------------------------------------- Adrian Ho a.k.a. The Cybermat Rider University of California, Berkeley c60a-2di@web.berkeley.edu Disclaimer: Nobody takes me seriously, so is it really necessary?
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<4362@pitt.UUCP> <257@gloom.UUCP> <82702@sun.uucp> <8939@ut-emx.UUCP> <3504@geaclib.UUCP> <18640@agate.BERKELEY.EDU>Show Full Headers
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!watmath!clyde!att!osu-cis!tut.cis.ohio-state.edu!rutgers!ucsd!ucbvax!agate!e260-2d.berkeley.edu!c60a-2di From: c60a-2di@e260-2d.berkeley.edu (The Cybermat Rider) Newsgroups: comp.windows.misc,comp.sys.next,comp.sys.mac Subject: Re: replacing the desktop metaphor Summary: My own follow-up Keywords: desktop metaphor, graphical interfaces, computing environments Message-ID: <18655@agate.BERKELEY.EDU> Date: 31 Dec 88 08:31:48 GMT References: <4362@pitt.UUCP> <257@gloom.UUCP> <82702@sun.uucp> <8939@ut-emx.UUCP> <3504@geaclib.UUCP> <18640@agate.BERKELEY.EDU> Sender: usenet@agate.BERKELEY.EDU Organization: University of California, Berkeley Lines: 22