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12 Hole Paper Tape - CSIRAC Computer, Exponential, T121, 1955-1964 Document Reg. No: HT 13509 4

Paper tape, part of a collection of paper tape programs and sub-routines used for input to CSIRAC. This tape has a sub-routine, a self contained unit designed to carry out a specific task within a program.

This tape was originally stored in Box B101 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 B101. The tapes stored in box B101 were T002.2, T120, T121, T122 and T123.

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 sub-routine:
Tape No: T121 Box No: B101
08.Transcendental (A)'=exp(a)-1 for -1<(A)<0.693. Repetitive process, error < 4p1
This subroutine for exponential yields exp(A) - 1 for -1 < A <0.69315 using a repetitive method.
For more documentation on the contents of this tape see folder 8, inventory id HT13511.12
Acquisition Information:
Donation from University of Melbourne (The) Computer Science & Software Engineering Department
Discipline: Technology

More information

Tagged with: computing, csirac computer, first generation computers, mainframe computers, making history - csirac
Themes this item is part of: The CSIRAC Program Library, Classification of CSIRAC Programs & Routines, CSIRAC Paper Tape Library Collection, Information & Communication Collection, CSIRAC Collection
Primary Classification: COMPUTING & CALCULATING
Secondary Classification: Digital Computing
Tertiary Classification: software
User: University of Melbourne (The), Parkville, Victoria, Australia, 1955-1964

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