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The technical reference for the IBM PC 5150 specifies that the WRITE-BLOCK routine turns on the cassette drive motor and transforms each byte into bits.A (1) bit corresponds to a 1.0 ms timer period, (0) bit corresponds to 0.5 ms, which results in a recording speed of 1000 - 2000 bit/s.
The Apple I introduced an expansion-card based cassette system similar to KCS, recording a single cycle of 2000 Hz for a space and a single cycle of 1000 Hz for a mark. This resulted in an average speed of about 1500 bit/s. The associated device driver in PROM offered an interactive mode that allowed users to write memory locations to tape.
The cassette was the next step following reel-to-reel audio tape recording, although, because of the limitations of the cassette's size and speed, it initially compared poorly in quality. Unlike the 4-track stereo open-reel format, the two stereo tracks of each side lie adjacent to each other, rather than being interleaved with the tracks of ...
The 8-track tape (formally Stereo 8; commonly called eight-track cartridge, eight-track tape, and eight-track) is a magnetic-tape sound recording technology that was popular [2] from the mid-1960s until the late 1980s, when the compact cassette, which pre-dated the 8-track system, surpassed it in popularity for pre-recorded music.
The microcassette was beaten to market by the Mini-Cassette, introduced by Philips in 1967. The mini-cassette is almost identical in appearance and dimensions to the microcassette, however it has thicker cogs for its reels and a slightly wider cassette. The mini-cassette, despite making it to market first, was less successful than the ...
Kevin Durant and the Suns hardly look like playoff contenders. (Photo by Kevin Sousa/Getty Images) (Kevin Sousa via Getty Images)
The width of early Shimano 6- and 7-speed cassettes was 36 mm, and early 8-speed 40 mm wide. Shimano then changed again and standardised 8-11 speed cassettes on 41.5 mm and second generation 7-speed to 38 mm. The widening of the sprocket carrier on the cassette hubs to 41.5 mm resulted in a decrease in the distance between the hub flanges.
Equal to 8-track tape and Stereo-Pak, the tape runs at a standard speed of 3.75 inches per second (IPS). [5] This is double the speed of the Compact Cassette and half of the top speed of consumer reel-to-reel tape recorders, which usually offer both 3.75 IPS and 7.5 IPS speeds.
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