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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. It eventually gave way to many splintering product lines after IBM introduced the Personal System/2 in April 1987.
The IBM Personal Computer (model 5150, commonly known as the IBM PC) is the first microcomputer released in the IBM PC model line and the basis for the IBM PC compatible de facto standard. Released on August 12, 1981, it was created by a team of engineers and designers at International Business Machines (IBM), directed by William C. Lowe and ...
CDP advertisements stated that the MPC "can use software and hardware originally intended for the IBM Personal Computer". [4] The "Multi" in its name hinted to the fact that it could also run the multi-user operating system MP/M-86. [5] The MPC was the first IBM PC clone and was actually superior to the IBM original. It came with 128 KB RAM ...
The engineering prototype and design model were utilized internally by Lowe in his early efforts to demonstrate the viability of creating a single-user computer. Throughout the 1970s he continually demonstrated numerous single-user computer design concepts in an effort to convince IBM to enter the personal computer business.
The Personal System/2 Model 30 and Personal System/2 Model 30 286 are IBM's entry-level desktop computers in their Personal System/2 (PS/2) family of personal computers. As opposed to higher-end entries in the PS/2 line which use Micro Channel bus architecture, the Model 30 features an Industry Standard Architecture bus, allowing it to use expansion cards from its direct predecessors, the PC ...
Model 20 disk storage uses IBM 2311 disk drives, model 11 or 12, attached to an integrated "storage control feature" on the CPU. [1]: pp.58–76 If multiple drives are attached they have to be the same model. Both models use the 1316 disk pack which provides a maximum of 203 cylinders with 10 tracks per cylinder. The model 11 uses all cylinders ...
The IBM Portable Personal Computer 5155 model 68 is an early portable computer developed by IBM after the success of the suitcase-size Compaq Portable. It was released in February 1984 and was quickly replaced by the IBM Convertible , only roughly two years after its debut.
On August 12, 1981, IBM released the IBM Personal Computer. [10] One of the most far-reaching decisions made for IBM PC was to use an open architecture, [11] leading to a large market for third party add-in boards and applications; but finally also to many competitors all creating "IBM-compatible" machines.