## 128K MP3 on 80 column punch cards

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• Hi, I was goofing on a listener at the radio station trying to listen to the stream with WEENDOZE. A couple of the listeners got with the joke and it soon
Message 1 of 8 , Dec 17, 2009
Hi,

I was goofing on a listener at the radio station trying to listen to the
stream with WEENDOZE. A couple of the listeners got with the joke and it
soon eroded into some really silly solutions. One provoked the following
question:

How many 80 column cards would it take to encode 1 second of 128K MP3???
How deep would that deck be?

Just a curiosity to put things into perspective.
--
VAXman- A Bored Certified VMS Kernel Mode Hacker VAXman(at)TMESIS(dot)COM

"Well my son, life is like a beanstalk, isn't it?"
• ... We had this conversation recently on cctalk. A standard IBM card is 0.178mm thick, and could possibly hold 120 bytes (960 bits). Take it from there. :-)
Message 2 of 8 , Dec 17, 2009
On Thu, 17 Dec 2009, Brian Schenkenberger, VAXman- wrote:

> How many 80 column cards would it take to encode 1 second of 128K MP3???
> How deep would that deck be?

We had this conversation recently on cctalk. A standard IBM card is
0.178mm thick, and could possibly hold 120 bytes (960 bits). Take it from
there. :-)

Mike Loewen mloewen@...
Old Technology http://sturgeon.css.psu.edu/~mloewen/Oldtech/
• ... And of course, there s no reason to have the redundant conversation here if turns into a simple math problem.
Message 3 of 8 , Dec 17, 2009
>> How many 80 column cards would it take to encode 1 second of 128K MP3??? How deep would that deck be?
>>
> We had this conversation recently on cctalk. A standard IBM card is 0.178mm thick, and could possibly hold 120 bytes (960 bits). Take it from there. :-)

And of course, there's no reason to have the redundant conversation here
if turns into a simple math problem.
• To end all the suspense... a 4MB stored on punch cards that are .178mm thick and hold 120 bytes each would take a stack approximately 6.25 kilometers high.
Message 4 of 8 , Dec 17, 2009
To end all the suspense... a 4MB stored on punch cards that are .178mm thick and hold 120 bytes each would take a stack approximately 6.25 kilometers high.

:-)

Happy Holidays all my fellow vintage computer/gaming collecting nuts!
--Timster--

On Thu, Dec 17, 2009 at 8:40 PM, Evan Koblentz <evan@...> wrote:

>> How many 80 column cards would it take to encode 1 second of 128K MP3??? How deep would that deck be?
>>
> We had this conversation recently on cctalk. A standard IBM card is 0.178mm thick, and could possibly hold 120 bytes (960 bits). Take it from there. :-)

And of course, there's no reason to have the redundant conversation here
if turns into a simple math problem.

• ... I don t know who you quoted, Evan, but I never received that post. Thanks for the info whoever provided it. I will do some computation and see if I can
Message 5 of 8 , Dec 18, 2009
Evan Koblentz <evan@...> writes:

>>> How many 80 column cards would it take to encode 1 second of 128K
>MP3??? How deep would that deck be? >> > We had this conversation
>recently on cctalk. A standard IBM card is 0.178mm thick, and could
>possibly hold 120 bytes (960 bits). Take it from there. :-)
>
>And of course, there's no reason to have the redundant conversation here
>if turns into a simple math problem.

I don't know who you quoted, Evan, but I never received that post. Thanks
for the info whoever provided it. I will do some computation and see if I
can amass enough actual cards to show 1 sec. of 128K MP3.

--
VAXman- A Bored Certified VMS Kernel Mode Hacker VAXman(at)TMESIS(dot)COM

"Well my son, life is like a beanstalk, isn't it?"
• ... That was me. Mike Loewen mloewen@cpumagic.scol.pa.us Old Technology http://sturgeon.css.psu.edu/~mloewen/Oldtech/
Message 6 of 8 , Dec 18, 2009
On Fri, 18 Dec 2009, Brian Schenkenberger, VAXman- wrote:

> I don't know who you quoted, Evan, but I never received that post. Thanks
> for the info whoever provided it. I will do some computation and see if I
> can amass enough actual cards to show 1 sec. of 128K MP3.

That was me.

Mike Loewen mloewen@...
Old Technology http://sturgeon.css.psu.edu/~mloewen/Oldtech/
• ... Thanks Mike. I figured if anyone would know, it would be you. How are you fairing with the PSs on the VAX? -- VAXman- A Bored Certified VMS Kernel Mode
Message 7 of 8 , Dec 18, 2009
Mike Loewen <mloewen@...> writes:

>--DEf1JDTUHdQcahAPHkKif-tpbAQDCbSKEihOMys Content-Type: text/plain;
>charset=US-ASCII Content-Transfer-Encoding: 7bit
>
>On Fri, 18 Dec 2009, Brian Schenkenberger, VAXman- wrote:
>
>> I don't know who you quoted, Evan, but I never received that post.
>Thanks > for the info whoever provided it. I will do some computation
>and see if I > can amass enough actual cards to show 1 sec. of 128K MP3.
>
> That was me.

Thanks Mike. I figured if anyone would know, it would be you.

How are you fairing with the PSs on the VAX?

--
VAXman- A Bored Certified VMS Kernel Mode Hacker VAXman(at)TMESIS(dot)COM

"Well my son, life is like a beanstalk, isn't it?"
• ... I used my ESR tester to check the big electrolytic caps in-circuit, and only found one that was questionable. I replaced it, but it made no difference. I
Message 8 of 8 , Dec 18, 2009
On Fri, 18 Dec 2009, Brian Schenkenberger, VAXman- wrote:

> How are you fairing with the PSs on the VAX?

I used my ESR tester to check the big electrolytic caps in-circuit, and
only found one that was questionable. I replaced it, but it made no
difference. I just bought another PS from a guy on Ebay, and will cross
my fingers that it works. I hope to be able to cobble together one good
PS out of two bad ones, and maybe figure out the problem. I hate working
on switchers, especially with no schematics or even pinouts.

Mike Loewen mloewen@...
Old Technology http://sturgeon.css.psu.edu/~mloewen/Oldtech/
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