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1401 Movies, Music, Sounds, and Videos

References to orchestral music have been moved to Johann Johannsson ( Jˇhann Jˇhannsson ) & father Johann Gunnarsson

Dear Friends,
I have no clue how to "organize" this web page -
- suggestions cheerfully/greatfully accepted - Ed Thelen

Table of Contents

Stan's videos and sounds from Stan Paddock
added July 14, 2011,
  • Bob Erickson demonstrating how to reproduce IBM punched cards using an IBM 513 reproducing punch. The video was shot, edited and published by Stan Paddock. The video was shot in the 1401 restoration room in the Computer History Museum.
  • Stan Paddock doing his adlib presentation of "Data processing in the 1960's". The video was shot by Ron Williams. It was edited and published by Stan Paddock. The video was shot in the 1401 restoration room in the Computer History Museum.
  • The 1401 restoration group at the Computer History Museum received word there was a company in Conroe Texas that was still using an IBM 402 for their everyday business. We contacted the company, Sparkler Filters, and were invited down to visit. Ron Crane, Ed Thelen, Frank King and Stan Paddock went to Conroe Texas in June of 2010. This video is of that trip.
    The video was shot, edited and published by Stan Paddock, shot on location at Sparkler Filters, Conroe Texas. an undated happy day -

- collection by Stan Paddock June 2010

IBM 1403, 1402, 729, 026 movies

"Music" from a 1403 printer under control of a 1401 from Ron Mak - .mp3 files
- (about 0.4 to 2.5 megabytes each) - shortest to longest - Performance rights not worked out with ASCAP :-|
- All below known to work with Windows Media Player, one person reported that Nero Media Player did not work for them.

1401 RFI (Radio Frequency Interference) "music" "our" 1401 - probably *NOT* RIAA free ;-))

Michael Mahon writes

Many early (handbuilt) computers, like SEAC, SWAC and others built in the late 1940's [delivered in 1950] were built with an audio amplifier and speaker connected to some logic level in the machine--a popular spot was the low bit of the accumulator. If the machine was not designed with a speaker, engineers or students often added them later.

The purpose was to provide audio feedback to the operator or programmer of the behavior of the running program.

I personally found that one quickly became familiar with the audio "rendition" of a program, and could easily recognize the characteristics of different parts of a program, and detect when any abnormality developed--for example, loops were obvious. ;-)

Later it was noticed that most machines in the low megahertz clock range radiated significant RF noise that an AM radio could pick up and render as audio if placed near the console or other high speed circuits.

Many programmers (including myself!) then proceeded to write a program with loops of varying repetition rates to allow the playing of reedy single-voice music over the radio.

By coincidence, I've spent a fair amount of time developing techniques for playing sounds and music on early micros, and the Apple II in particular.

I really enjoy your website!

-Michael Mahon
Computer History Museum member

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