[SIGCIS-Members] Jensen's decimal print routine?

Jeffrey Starr jwstarr at acm.org
Fri May 15 09:23:15 PDT 2026


One of the technical anecdotes in Steven Levy's *Hackers* is about Jensen's
decimal print routine. Described as a "tall, silent hacker from Maine" (pg
33), Jensen wrote a decimal print routine for the TX-0 that did not use a
table of powers of ten and fit within 46 instructions, less than the 50
instructions thought necessary.

Is there a copy of this algorithm?

The Computer History Museum archives include some TX-0 paper tape
artifacts, but the description of the contents is minimal. I've also looked
at Bitsaver's collection of TX-0 documents, but this doesn't seem to be
included.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.sigcis.org/pipermail/members-sigcis.org/attachments/20260515/31798a4d/attachment.htm>


More information about the Members mailing list