IBM 557 Alphabetic Interpreter Reference Manual. Ref: A24-1403-6 Minor Revision May 1963 178 pages. Reference Number / ISBN: Date Published: May 1963 Publisher: IBM Format: This exhibit has a reference ID of CH17151. Please quote this reference ID in any communication with the Centre for Computing History. Click on the Images For Detail.
The IBM 550 numerical interpreter was the first commercial machine made by IBM that read numerical data punched on cards and printed it across the top of each card. The 550 was introduced in 1930.[1]
Information to be printed could be placed in any sequence via plugboard control panel selections. The machine operated at the rate of 75 cards a minute. The feed hopper had a capacity of 800 cards, and the stacker had a capacity of 1,000 cards.
Alphabetic and numeric characters could be printed by the Type 552 alphabetic interpreter, announced in 1937. It could process 60 cards per minute. The Type 552 was withdrawn in December 1957.[2]
References[edit]
![Type Type](http://ibm-1401.info/pictures/ibm557-cardcodes.png)
See also[edit]
- IBM 557 Alphabetic Interpreter
Mainframes > Manufacturers > IBM (14) > 1951- Plug Board, IBM 557posted Feb 1, 2009, 8:31 PM by Mark Alspaugh [ updated Dec 26, 2009, 8:56 PM]
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