IBM 729 the tape reel. A 3/4 inch gap between records allowed the mechanism enough time to stop the tape. Initial tape speed was 75 inches per second (2.95 m/s) and recording density was 200 characters per inch, giving a transfer speed of 120 kbit/s. Later 729 models supported 556 and 800 characters/inch (transfer speed 480 kbit/s). At 200 characters per inch, a single 2400 foot tape could store the equivalent of some 50,000 punched cards (about 4,000,000 six-bit bytes, or 3 MByte). The 729 series was superseded by 9 track tape drives introduced with the IBM System/360. The IBM 729 I
Ohio State Route 729 41 continues north to South Solon, and SR 729 turns right. North of Jeffersonville, the route makes three more 90-degree S-curves before entering Madison County. SR 729 ends at an intersection with SR 323 between the villages of South Solon and Midway. SR 729 was first designated in 1937 between what was then US 35 near Octa and Milledgevile (now the eastern terminus of SR 435) and its present northern terminus. In 1940, the route was extended south on a new alignment to Sabina and took over SR 350 from SR 73 to Sabina (SR 350 at that time ran