IBM 2501 Card Reader. Data Coding. The 2501 reads punched cards in card image only. Any code translation required must be done by the stored program in the CPU. As shown in Figure 39, the twelve rows (12-9) in a card column correspond to the 0-11 bits, respectively, of a core storage word.

The IBM 2501 Card Reader The IBM 2501 Card Reader. At Columbia University, the installation of these units for public use in late 1971 was a significant step along the path of bringing users and "the computer" closer together.

370/ 125: Creslow Park, Aylesbury, UK: Adam Bradley: Unknown: With IBM docs ! Visit this 1130 installation (I) Seen here, from left, are an IBM 1442 card read punch (which could read 90, 300 or 400 cards per minute and punch 80 or 160 columns per second); an IBM 2501 card reader (which could read 600 or 1,000 cards a minute); in the center foreground, an IBM 1131 central processing unit; behind the 1131, an IBM 1133 multiplex control enclosure; at right, an IBM 2310 disk storage This is a 1970s Documation M-1000-L punched card reader, capable of reading up to 1000 cards per minute. The reader in this video is operating in local mode The design of the punch mechanism after the reader allowed cards to be read and then punched before ending up in the output bin. The 1130 could also use another popular card reader, the IBM 2501, which could read cards much faster at 600 to 1000 cards per minute and for some configurations both a 2501 and 1442 were fitted. 2019-06-03 IBM 2501 Card Reader, Models Al and A2, GA26-5892 • Physical Planning Specifications IBM 1130 Installation Manual–Physical Planning, GA26-5914 IBM 1130 Physical Planning Template, GX26-5997 • Programming Systems–General IBM 1130 Card/Paper Tape … Card Reader - IBM Punch Cards. The IBM 2501 Card Reader. Computer Resurrection Issue 47.

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2021-03-31 IBM 2501 Card Reader. Data Coding. The 2501 reads punched cards in card image only. Any code translation required must be done by the stored program in the CPU. As shown in Figure 39, the twelve rows (12-9) in a card column correspond to the 0-11 bits, respectively, of a core storage word. This museum item is the original IBM Card Reader that attaches to IBM System 360/370 mainframe systems and provides punch card input.

GPT. Storbritannien. 2027. 13,8 (character reader).

The IBM 2501 is a punched-card reader from IBM with models for the System/360 and System/370 mainframe systems and for the IBM System/360 Model 20, the IBM 1130 and IBM System/3 minicomputers. 2501 models can read 80-column cards at either 600 or 1000 cards per minute (CPM).

Card reading is under direct program control. IBM Punch Cards IBM 026 Card Punch IBM 2501 Card Reader Until the mid-1970s, most computer access was via punched cards. Programs and data were punched by hand on a key punch machine such as the IBM 026 and fed into a card reader like the IBM 2501.

This is my homemade Arduino/CHDK/Python/Linux based IBM 80 Column Punch Card Reader. The cards are imaged by the camera under control of the Arduino and CHD

One IBM 1442 Card Punch (shared via 2914 switch - note this picture's from one on sale on  IBM 29 card punch · IBM 2501 card reader · IBM 3420 magnetic tape unit · IBM 3803 tape control unit. Data card (or tape) input is indicated by the words which are indented and KCC-IBM USER'S GUIDE COMPONENT CARD READER/PUNCH Cards read  GOOD TIMES! punch cards for data and program & command entry. Top is a A blank card is shown (bottom)." IBM 5100.

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Computer Resurrection Issue 47. Interpreter. Computer Resurrection Issue 47. Univac 1108 At CMU. Univac 1108 3505 Card Reader. Catalog Number X1640.99A.

The cards are imaged by the camera under control of the Arduino and CHD Find many great new & used options and get the best deals for Vintage IBM 2501 CARD READER 600 CPM High Speed Complete Mechanism only ca.
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1130 installation (I) Seen here, from left, are an IBM 1442 card read punch (which could read 90, 300 or 400 cards per minute and punch 80 or 160 columns per second); an IBM 2501 card reader (which could read 600 or 1,000 cards a minute); in the center foreground, an IBM 1131 central processing unit; behind the 1131, an IBM 1133 multiplex control enclosure; at right, an IBM 2310 disk storage

Sign in to comment. Be respectful, keep it civil and stay on topic. We delete comments that violate our policy, which we encourage you to read. 2311 Disk Storage (DM2 card system only) 2501 Card Reader (DM2 only) 1231 Optical Mark Page Reader (DM2 only) Synchronous Communications Adapter (DM2 only) Plotter subroutines are described in IBM 1130/1800 Plotter Subroutines, Order No. GC26-3755. SCA subroutines are described in IBM 1130 Synchronous Communications Adapter Subroutines, Order I recently helped repair the card reader for the Computer History Museum's vintage IBM 1401 mainframe. In the process, I learned a lot about the archaic but interesting electromechanical systems used in the card reader. Most of the card reader is mechanical, with belts, gears, and clutches controlling the movement of cards through the mechanism.