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This list of computer size categories attempts to list commonly used categories of computer by the physical size of the device and its chassis or case, in descending order of size. One generation's "supercomputer" is the next generation's "mainframe", and a "PDA" does not have the same set of functions as a "laptop", but the list still has ...
Drives 9.5 mm high became an unofficial standard for all except the largest-capacity laptop drives (usually having two platters inside); 12.5 mm-high drives, typically with three platters, are used for maximum capacity, but will not fit most laptop computers. Enterprise-class drives can have a height up to 15 mm. Seagate released a 7 mm drive ...
The T3100e/40 is the same as the T3100e, but with a larger 40 MB hard drive. The T3100SX has a 16 MHz i386SX CPU, 1 MB RAM and a 40 MB or 80 MB hard drive, a VGA 640 × 480 × 16 shade black & orange gas plasma display or black & white LCD, and also included an internal rechargeable battery, for true portability.
In 2018, the largest hard drive had a capacity of 15 TB, while the largest capacity SSD had a capacity of 100 TB. [38] As of 2018 [update] , HDDs were forecast to reach 100 TB capacities around 2025, [ 39 ] but as of 2019 [update] , the expected pace of improvement was pared back to 50 TB by 2026. [ 40 ]
However, most laptops have drive bays smaller than the 15 mm specification. 2.5-inch hard drives may range from 7 mm to 15 mm in height. There are two heights that appear to be prominent. 9.51 mm size drives are predominantly used by laptop manufacturers. 2.5-inch Velociraptor [3] and some higher capacity drives (above 1 TB), are 15 mm in ...
For example, the first commercial hard drive, IBM's RAMAC in 1957, supplied 3.75 MB for $34,500, or $9,200 per megabyte. In 1989, a 40 MB hard drive cost $1200, or $30/MB. And in 2018, 4 Tb drives sold for $75, or 1.9¢/GB, an improvement of 1.5 million since 1989 and 520 million since the RAMAC.
The original model was based on the NEC V30 microprocessor; the computer includes MS-DOS 3.3 built into ROM. PC Magazine featured the UltraLite on its cover in November 1988 [4] and shortly thereafter journalists began referring to any A4-sized computer as "notebooks", to distinguish them from the larger and heavier laptops of the time. [5]
Drives with smaller media generally conformed to de facto standard form factors. The capacity of hard drives has grown exponentially over time. When hard drives became available for personal computers, they offered 5-megabyte capacity. During the mid-1990s the typical hard disk drive for a PC had a capacity in the range of 500 megabyte to 1 ...