Paper tape, part of a collection of paper tape programs and sub-routines used for input to CSIRAC. The programs on this paper tape cause a punch to put the contents of a designated block of the computer memory onto 5-hole tape in binary form. This may be done for example, to save a block of information, the content of which may have taken the computer a long time to calculate. At a later time, this information could be restored by reading the 5-hole tape, and a further calculation could then be done utilizing the result.
This tape was originally stored in Box B100 of the CSIRAC Program Library, which consisted of tried and tested paper tape programs and sub-routines (sections of programs). The tape is now stored with the other paper tape programs originally stored in box B100. The tapes stored in box B100 were T001, T002, T002.1, T003 and T004.
The collection includes the original University of Melbourne Computation Laboratory Paper Tape Library of 12 hole tapes of subroutines and programs, and program and data tapes from staff and outside users.
Most of the paper tapes were 12-track punched paper tapes. 5 hole paper tapes were used primarily for data input and output rather than program input. However, 5 hole program tapes could be produced by using Interprogram, an English language programming system rather than using machine language.
Each tape has a 'T' number. The Computation Laboratory Paper Tape Library consisted of tapes with a tape number less than 700. There were not 700 tapes but the number 700 was arbitrarily chosen to separate the Computation Laboratory Library tapes from user tapes.
Details of this tape:
Further information may be found in the headers of either the .CVT or .TSP files.
Donation from Computer Science & Software Engineering Department, University of Melbourne (The), by 07/2003
Type of item