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The original IBM Personal Computer, with monitor and keyboard The IBM Personal Computer , commonly known as the IBM PC, spanned multiple models in its first generation (including the PCjr , the Portable PC , the XT , the AT , the Convertible , and the /370 systems , among others), from 1981 to 1987.
Workplace OS is IBM's ultimate operating system prototype of the 1990s. It is the product of an exploratory research program in 1991 which yielded a design called the Grand Unifying Theory of Systems (GUTS), proposing to unify the world's systems as generalized "personalities" cohabitating concurrently upon a universally sophisticated platform of object-oriented frameworks upon one microkernel.
Initially, model 1 (4952, Model C), [4] model 3 (IBM 4953) and model 5 (IBM 4955, Model F [4]) processors were provided. Later processors were the model 4 (IBM 4954) and model 6 (IBM 4956). Don Estridge had been the lead manager on the IBM Series/1 minicomputer. He reportedly had fallen out of grace when that project was ill-received.
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The original PS/1 (Model 2011), based on a 10 MHz Intel 80286 CPU, was designed to be easy to set up and use. It featured 512 KB or 1 MB of on-board memory (expandable to 2.5 MB with proprietary memory modules), built-in modem (in American models only) and an optional 30 MB hard disk. Later models had an optional 40 MB hard disk.
Machines sold in 1994 contained a version of the System Support Program (SSP) operating system designated "7.1", this was the 9402-236. In 1995, an upgraded A/36 was offered with a version of SSP designated "7.5", these were the 9402-436 model. [3] A 236 could be upgraded to a 436. The 436 model could also run OS/400.
The median price increase of the drugs being hiked Jan. 1 is 4.5%, which is in line with the median for all price increases last year. Drugmakers to raise US prices on over 250 medicines starting ...
As with the 1301, there is a Model 2 which doubles the capacity by stacking two modules. The IBM 1302 Model 1 leased for $5,600 per month or could be purchased for $252,000. Prices for the Model 2 were $7,900 per month or $355,500 to purchase. The IBM 7631 controller cost an additional $1,185 per month or $56,000 to purchase.