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Nov 5, 2013 · It's so nice that this site is peppered with technical types who can break this stuff down for us laymen. (1) This question is just begged! Granted, the complexities (and obvious expense of) double-sided drives is obvious. But, why was the Atair 810 single-density, to begin with? Apple, Commdore,...
DOUBLE DENSITY - Atari disk drives that are capable of double-density operation also use 40 tracks of 18 sectors each. However, each sector holds twice as much data, (256 bytes) as a single density sector. ENHANCED DENSITY - This special density format is supported by Atari's DOS 3 and was developed by Atari specifically for its 1050 drive. As ...
The Atari 1050 is a floppy disk drive for Atari 8-bit computers released in June 1983. It is compatible with the 90 kB single-density mode of the original Atari 810 it replaced, and added a new "enhanced" or "dual density" mode that provided 130 kB. Based on a half-height Tandon mechanism, it was smaller than the 810 and matched the styling of ...
In double density everything was much the same, except each sector was 256 bytes per sector. (the first few sectors were still single density, so that the system could boot, because the O/S in the atari expected 128 byte sectors.) Dual density was formatted the same as single density, but there were more single density sectors on the disk.
True double density utilizes 256 byte sectors as opposed to the 128 byte sectors of single density, with the number of sectors and tracks remaining the same. Therefore, the storage capacity of a double density disk is 256*18*40 bytes or 184,320 bytes, which exceeds the capacity of the enhanced density mode of the 1050 drive by more than 50,000 bytes-a substantial difference by anyone's standards.
Jul 31, 2024 · What is the density of water at 20 °C of salinity S = 35‰ and under the pressure of 1 atm? Let's give our water density calculator a try and find out! Set the temperature to 20 °C. Set salinity to 35‰. Set pressure to 1 atm. And that's it! The density of salt water is 1,024.9 kg/m³. The same density of water is 1.0249 g/ml or 63.982 lb/ft³.
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Jul 23, 2024 · Updated on July 23, 2024. Below is a table of densities of common substances, including several gases, liquids, and solids. Density is a measure of the amount of mass contained in a unit of volume. The general trend is that most gases are less dense than liquids, which are less dense than solids. But there are numerous exceptions.
