The XT's 10 MB hard drive and 8088 CPUCentral processing unit — the primary chip that executes program instructions. made floppy-swap hell optional for business software. Clone makers copied its expansion slots and BIOSBasic Input/Output System — firmware that initializes hardware when a PC boots, before the OS loads.-compatible design, cementing the PCPersonal computer — a computer designed for individual use, especially desktop or laptop machines. as the platform for DOSDisk Operating System — an OS centered on disk storage; often refers to MS-DOS on PCs. apps, early LANs, and eventually Windows. Internal storage became the default expectation for desktop development machines.

The PCPersonal computer — a computer designed for individual use, especially desktop or laptop machines. XT normalized built-in hard diskMagnetic storage with spinning platters — the primary bulk storage for PCs and servers for decades.s on IBMInternational Business Machines — a major computer and enterprise technology company since the early 20th century.-compatible desktops.

It extended the open PCPersonal computer — a computer designed for individual use, especially desktop or laptop machines. architecture that clone vendors and software houses built on.