Byte codified this common meaning. Many types of applications use information representable in eight or fewer bits and processor designers optimize for this common usage. The popularity of major commercial computing architectures has aided in the ubiquitous acceptance of the eight-bit size. Modern architectures typically use 32- or 64-bit words, built of four or eight bytes. The unit symbol for the byte was designated as the upper-case letter "B" by the International Electrotechnical Commission (IEC) and Institute of Electrical and Electronics Engineers (IEEE) in contrast to the bit, whose IEEE symbol is a lower-case "b". Internationally, the unit "octet", symbol "o",
Type-in program such as "Byte" and "Popular Computing" printed them less frequently, often as a test program to illustrate a technical topic covered in the magazine rather than an application for general use. Consumer-oriented publications such as "Compute!" and "Family Computing" ran several each issue. The programs were sometimes specific to a given home computer and sometimes compatible with several computers. Entirely platform-specific magazines such as "Compute!'s Gazette" (Commodore) and "Antic" (Atari), since they only had to print one version of each program, were able to print more, longer listings. Although type in programs were usually copyrighted, like the many games in