''PPC Journal'' was an early hobbyist computer

magazine A magazine is a periodical literature, periodical publication, print or digital, produced on a regular schedule, that contains any of a variety of subject-oriented textual and visual content (media), content forms. Magazines are generally fin ...

, originally targeted at users of HP's first programmable calculator, the

HP-65 The HP-65 is the first magnetic card-programmable handheld calculator. Introduced by Hewlett-Packard in 1974 at an MSRP of $795 (), it featured nine storage registers and room for 100 keystroke instructions. It also included a magnetic card ...

. It originated as ''65 Notes'' and the first issue was published in 1974. It later changed names in 1978 to ''PPC Journal'' and in 1980 to ''PPC Calculator Journal''. With Volume 12 published in 1984 the magazine was renamed ''PPC Journal''. The magazine ended publication in July 1987 (Volume 14). The founder of the ''PPC'' (Personal Programming Center) and editor of the journal was Richard J. Nelson. This hobbyist group worked around the journal and was known because Nelson discovered hidden instructions on the

calculator. Later the club and the journal got maximum notoriety when several club members discovered the " synthetic instructions" of the

HP-41C The HP-41C series are programmable, expandable, continuous memory handheld RPN calculators made by Hewlett-Packard from 1979 to 1990. The original model, HP-41C, was the first of its kind to offer alphanumeric display capabilities. Later came ...

Competition

A similar journal since 1976 was ''

52-Notes 5 (five) is a number, numeral and digit. It is the natural number, and cardinal number, following 4 and preceding 6, and is a prime number. Humans, and many other animals, have 5 digits on their limbs. Mathematics 5 is a Fermat pri ...

'' for the

Texas Instruments Texas Instruments Incorporated (TI) is an American multinational semiconductor company headquartered in Dallas, Texas. It is one of the top 10 semiconductor companies worldwide based on sales volume. The company's focus is on developing analog ...

SR-52 user community. It was edited by Richard C. Vanderburgh. Both journals deliberately established a mode of "friendly competition", often exchanging information and comparing solutions among user groups. This journal was later renamed into '' TI PPC Notes'' and edited by Maurice E. T. Swinnen (from January 1980 to December 1982) and Palmer O. Hanson, Jr. (from January 1983).

References

Defunct hobby magazines published in the United States Defunct computer magazines published in the United States Magazines established in 1974 Magazines disestablished in 1987 {{hobby-mag-stub