19 May
2009
19 May
'09
1:47 p.m.
--- On Tue, 5/19/09, 9000 VAX <vax9000 at gmail.com> wrote:
Does it ring a bell?
I don't know. Does it have a bell to ring? Most computers used a speaker instead of a
mechanical bell, but the ASR33 teletype has one, as does the Burroughs B80.
<grin>
Yeah... I dunno - I need a little more information to go on. A description would be nice.
A picture even better. :)
-Ian
4:04 p.m.
In article <e1d20d630905190654r5d77fe6n79f8b975f376eb93 at mail.gmail.com>,
William Donzelli <wdonzelli at gmail.com> writes:
> I don't know. Does it have a bell to ring?
Most computers used a speaker in
stead of a mechanical bell, but the ASR33 teletype
has one, as does the Burroug
hs B80.
So does the Bendix G15 and DEC LINC-8.
Also, I *think* the VT05 has a bell in it and not a buzzer.
--
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20 May
20 May
6:25 p.m.
Also, I *think* the VT05 has a bell in it and not a
buzzer.
FWIW the Teletype 43 has a real bell, operated by a solenoid. The VT50
series have a little relay which is pulsed to give the keyclick and fed
with a squarewaveto make the 'bell' sound (it sounds like what we call a
'raspberry').
Did any micros haev a bell rather than a speaker? Any other unusual
noise-makers for the ^G signal (The HP9830 has a normal speaker +
oscillator triggered by an output line from the CPU. But HP added a
little circuit to add an ampltude envelope to the sound to make it sound
a littler nicer. Typical of the quality of HP of that time!)
-tony
5707
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5708
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