Program printout

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Extract from a BASIC listing
Listing of a long computer program from the 1970s that was first printed on continuous paper and then bound.

A program listing ( English listing ) is a printed list of computer commands , usually in the form of a computer program or computer data . It is printed in a human-readable form (usually rows of numbers and letters).

In the 1980s in particular, computer game magazines and books often had program listings to type in, mostly in BASIC or assembler , sometimes for several home computer systems. The first successful such book was in 1978 Basic Computer Games (in German BASIC computer games ), published by David H. Ahl ( Creative Computing ). In Germany the books were published in 1982 by Sybex- Verlag.

Many magazines, including the 64's, used input aids, such as special editors (MSE) or checksums, to make troubleshooting easier with checksums . In some systems, such as the Commodore 64 , graphic and control characters often made input difficult. Therefore, these have often been replaced by plain text . For example (DOWN5) for 5 × Cursor Down or (SA) for Shift + Key A. Alternatively, the conversion was also carried out using software such as Simons' Basic .

In the past, a program expression was mainly used for error correction . Printing on continuous paper was common . This type of use has decreased due to the better options for screen display. Today, program printouts are mainly used for training purposes or to publish a specific issue.

literature

Individual evidence

  1. ^ Advertisement for the book Basic Computer Games . In: PC Mag . Volume 4, No. 1 , 1985, pp. 363 ( Google Books ).
  2. Debugging - troubleshooting in BASIC programs. zock.com, accessed January 12, 2017 .
  3. listing. Geoinformatics service, accessed October 17, 2014 .