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IBM PC - Wikipedia, the free encyclopedia (2085 words) |
 | The original 1981 IBM PC's keyboard was severely criticised by typists for its non-standard placement of the return and left shift keys. |
| The original IBM PC used the 7 bit ASCII alphabet as the basis, but in addition this was extended to an 8 bit somewhat haphazardly collected set of characters unique for the IBM PC. |
| In 1988 IBM introduced a drive for 2.88 megabyte "DSED" diskettes in its top-of-the-line models; it was an instant failure and is all but forgotten today (but survives as a possible "size" choice in disk-formatting utilities). |
| IBM PC - definition of IBM PC in Encyclopedia (1854 words) |
| However, due to the success of the IBM PC, what had been a generic term came to mean specifically a microcomputer compatible with IBM's specification (see IBM PC compatible). |
| The 1981 PC had one or two 360 kilobyte 5 1/4 inch single sided double density floppy disk drives. |
| The first IBM PC that included a fixed, non-removable, hard disk was the XT. |
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