<storage> The first full-height 5.25 inch hard disk drive for personal computers, introduced in 1980 by Shugart Technology (now Seagate Technology). The ST-506 stored up to 5 megabtyes after formatting using MFM encoding. It transferred data at 625 kilobytes per second. The ST-506 (like the ST-412) was interfaced to a computer via a disk controller. The interface was a faster version of the Shugart Associates SA1000 interface, which was in turn based upon the floppy disk drive interface. Two cables connected the controller to the disk. The 34-pin control cable controlled mechanical motion and data was read or written serially using two pins of the 20-pin data cable. Other companies copied the interface, creating a universal {de facto standard} that was further strengthened by its revision to support Seagate's 10 MB ST-412 drive that was adopted for the IBM PC XT. Around 1990, SCSI and ATA superseded ST-506. These eliminated the problems of matching controllers to drives by physically integrating a controller with the drive, allowing interleave ratios and other disk parameters to be optimised by the manufacturer rather than the system integrator. Connector pin-out (http://www.gamesx.com/hwb/co_ST506.html). (2007-03-06)

Year 506 (DVI) was a common year starting on Sunday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Messala and Dagalaiphus (or, less frequently, year 1259 Ab urbe condita).

Ralaniten acetate (developmental code name EPI-506) is a first-in-class antiandrogen that targets the N-terminal domain (NTD) of the androgen receptor (AR) developed by ESSA Pharmaceuticals and was under investigation for the treatment of prostate cancer. This mechanism of action is believed to allow the drug to block signaling from the AR and its splice variants.

Area code 506 is the telephone area code in the North American Numbering Plan (NANP) for the Canadian province of New Brunswick. The area code was created in 1955 in a split of numbering plan area (NPA) 902.

German submarine U-506 was a Type IXC U-boat of Nazi Germany's Kriegsmarine during World War II. The submarine was laid down on 11 July 1940 at the Deutsche Werft yard in Hamburg as yard number 296, launched on 20 June 1941 and commissioned on 15 September 1941 under the command of Kapitänleutnant Erich Würdemann.

St Peter was an ancient parish in Hertfordshire, England that was abolished for civil purposes in 1894. It was also known as St Albans St Peter.

JS Kokuryū (SS-506) is the sixth boat of Sōryū-class submarines. She was commissioned on 9 March 2015.

This is a list of all the United States Supreme Court cases from volume 506 of the United States Reports:

RCMPV St. Roch is a Royal Canadian Mounted Police schooner, the first ship to completely circumnavigate North America, and the second vessel to transit the Northwest Passage.

St Salvator's College was a college of the University of St Andrews in St Andrews, Scotland. Founded in 1450, it is the oldest of the university's colleges.