Saturn

SaturnSaturn is the sixth planet from the Sun and the second-largest in the Solar System, after Jupiter. It is a gas giant with an average radius of about nine times that of Earth.^[20][21] It only has one-eighth the average density of Earth; however, with its larger volume, Saturn is over 95 times more massive.^[22][23][24] Saturn is named after the Roman god of wealth and agriculture; its astronomical symbol (♄) represents the god's sickle.

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Apple ][

Apple ][ in common 1977 configuration with 9'' monochrome monitor, game paddles, and Red Book recommendedPanasonicRQ-309DS cassette deck

History

By 1976, Steve Jobs had convinced the product designer Jerry Manock (who had formerly worked at Hewlett Packard designing calculators) to create the "shell" for the Apple II—a smooth case inspired by kitchen appliances that concealed the internal mechanics.^[5]The earliest Apple II's were assembled inSilicon Valley, and later in Texas;^[8]printed circuit boardswere manufactured inIrelandandSingapore. The first computers went on sale on June 10, 1977^[9][10]with aMOS Technology 6502microprocessor running at 1.022,727MHz(²⁄₇of the NTSC color carrier), twogame paddles^[11](bundled until 1980, when they were found to violateFCC regulations),^[12]4KiB ofRAM, anaudio cassetteinterface for loading programs and storing data, and theInteger BASICprogramming language built into theROMs.

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Jupiter

JupiterJupiter is the fifth planet from the Sun and the largest in the Solar System. It is a gas giant with a mass one-thousandth that of the Sun, but two-and-a-half times that of all the other planets in the Solar System combined. Jupiter is one of the brightest objects visible to the naked eye in the night sky, and has been known to ancient civilizations since before recorded history. It is named after the Roman god Jupiter.^[19] When viewed from Earth, Jupiter can be bright enough for its reflected light to cast visible shadows,^[20] and is on average the third-brightest natural object in the night sky after the Moon and Venus.

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Sargon Chess Software

Sargon (or SARGON) is a line of chess-playing software for personal computers. The original SARGON from 1978 was written in assembly language by Dan and Kathleen "Kathe" Spracklen for the Z80-based Wavemate Jupiter III.^[1]

History

SARGON was introduced at the 1978 West Coast Computer Faire where it won the first computer chess tournament held strictly for microcomputers, with a score of 5–0.^[2][3] This success encouraged the authors to seek financial income by selling the program directly to customers. Since magnetic media were not widely available at the time, the authors placed an advert in Byte magazine selling for $15 photocopied listings that would work in any Z80-based microcomputer.^[1] Availability of the source code allowed porting to other machines.^[4] For example, the March–April 1979 issue of Recreational Computing describes a project that converted Sargon to an 8080 program by using macros.^[5] Later the Spracklens were contacted by Hayden Books and a book was published.

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