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Archival Paper Tape Reading Equipment - CSIRAC Computer, 1997-2002 Object Reg. No: HT 23761

Summary:
Equipment set up to read archival CSIRAC Computer paper tapes and save the information in electronic form. The equipment was assembled in 1997, long after CSIRAC ceased all operations in 1964. Paper tapes were read by CSIRAC using paper tape readers of a different design.

The equipment consists of a late 1980s laptop computer connected to a computer printer (circa 1985) via a parallel interface. It is still operational and has been used occasionally to read CSIRAC paper tapes. A video was made in 2009 showing a paper tape being read.

Reading the tapes required a mechanism for advancing the tape in a controlled manner and a means of reading the holes on the tape. The Apple printer platen was used to advance the tape, under control of the software (written by John Horvath) executed on the Toshiba Laptop computer. The holes in the tape were detected photo electrically with a light detection system mounted on the printer.

A project to re-construct the CSIRAC music was a stimulus for the construction of a system to read CSIRAC paper tapes. The reading of the music tapes was a small part quantitavely of the tape reading project. The paper tape reading equipment was used by John Spencer and Jurij Semkiw to read the Melbourne music tapes for the project to recreate CSIRAC music.

Once read, the information on the paper tapes was converted into Hex files, which were converted to CVT format for use with the CSIRAC emulator. TSP (list) files were also created. The work was completed by John Spencer.

12 Hole Paper Tape, number T916 (HT 13509.117), is used to test the tape reader. It should be loaded at a pencil mark drawn on the tape.

The archival paper tape reading equipment consists of:
1. Toshiba laptop Model # T1200, 1987.
Used to drive the converted Apple printer to read 12 hole paper tapes and store the data on 3½ inch floppy disks. The software was written by John Horvath, University of Melbourne.
(The resulting Hex files were converted to CVT format for use with the CSIRAC emulator. TSP (list) files were also created. The work was completed by John Spencer.)
This laptop only reads double density disks, not high density.
Note: power supply unit (16.4V) not supplied
2. Apple Printer Model # A9M0303P, about 1985.
Converted to read CSIRAC 12 hole paper tape and connected via a parallel interface to a Toshiba laptop; the conversion was carried by Jurij Semkiw and John Horvath at the University of Melbourne.
3. Other items
power supply unit (16.4V) for reader mechanism, about 1990
Toshiba AC adaptor
voltage dropping resistor
serial cable (white 6 core)
parallel cable (grey 20 strand)
Power cable for printer
Two 3½" floppy disks in laptop
Laptop carrying case
Toshiba MS-Dos manual
User manual
One systems disk in a case
One diagnostic disk in a case
Unlabelled disk
Description:
1. Apple Printer Model
Cream oblong machine with attachment to read paper tapes
Printer has plastic dust cover
2. Toshiba laptop Model # T1200
Cream laptop with collapsible screen
3. Other items supplied
power supply unit (16.4V) for reader mechanism
Grey plastic box with cable and power pins
4. Toshiba AC adaptor for laptop
Black plastic box with two cable connectors
5. Voltage dropping resistor
Black plastic box with two sockets
6. Serial cable
white 6 core round cable
7. Parallel cable
grey 20 conductor ribbon cable
8. Power cable for printer
black mains cable
9. 3½" floppy disks in container
10. 3½" floppy disks in container
10. Floppy disks in laptop A drive
11. Floppy disk in latop B drive
Statement Of Significance:
The paper tape reading project is significant in that it is an example of how obsolete computing software can be read by later non-compatible computing equipment.
Acquisition Information:
Donation from Dr Peter Thorne - University of Melbourne (The) Computer Science Department, 2010
Discipline: Technology
Dimensions: 338 mm (Width), 413 mm (Length)

More information

Tagged with: computers, csirac computer, computer music, making history - csirac
Themes this item is part of: CSIRAC Paper Tape Library Collection, Information & Communication Collection, CSIRAC Collection, Archival Paper Tape Reading Project for CSIRAC 12 Hole Paper Tapes
Primary Classification: COMPUTING & CALCULATING
Secondary Classification: Digital Computing
Tertiary Classification: storage and retrieval
Inscriptions: 1. Apple Printer
Model # A9M0303P
Serial # 701127
2. Toshiba laptop
Model # PA7044EA W
T1200: Serial # 07914796
3. power supply unit for reader mechanism
Panasonic AC adaptor: Model # KX-A11BA
4. Toshiba AC adaptor for laptop
Model # PA7485EA: Serial # G9D0707CD
5. Voltage dropping resistor - No inscription
6. Serial cable - No inscription
7. Parallel cable - No inscription
8. Power cable for printer - No inscription
9. 3½" floppy disks in container: Diagnostics and Supplemental
10. 3½" floppy disks in container: MSDOS 3.3
10. Floppy disks in laptop A drive: DOS Boot floppy;
11. Floppy disk in latop B drive: Reader.exe
User: University of Melbourne (The) Computer Science and Software Engineering, Melbourne, Victoria, Australia, 1997-2002
User: CSIRAC History Team, Melbourne, Victoria, Australia, 1997-2002
Bibliography:
  1. [Book], Mr Peter Thorne, Dr Doug McCann, The Last of the First CSIRAC: Australia's First Computer, Department of Computer Science and Software Engineering- The University of Melbourne, Melbourne, 2000, 2000

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