Name/Title
1984- IBM PC AT, 5170 (6/2024)Tags
IBMDescription
1984- The IBM PC AT was the successor of the PC and the XT. IBM added a lot of new features: they abandoned the old Intel 8086 to the Intel 80286, so the PC AT used new 16 bit expansion slots. The PC AT had a new version of the Microsoft OS: MS-DOS 3.0 which could manage the new 5.25" floppy disk format (1.2 MB), the new hard disk capacities (20 MB and more) and allowed file sharing. It had a new keyboard too (the same we use now, more or less) with cursor keys and a key that could lock it. Two models were launched: the PC-AT model 1 (256 KB RAM, two floppy disk units and a color screen) and the PC-AT Model 2 (512 KB RAM, one floppy disk unit, one hard disk and a color screen). This computer was revolutionary, but it was the last time IBM imposed a standard to the PC clone industry. The next year, the first PC based on an 80386 was made by Compaq and IBM failed to impose the PS/2 standard in 1986
