The PA-7200 – also known as PCX-T', code-named Thunderbird' –, is a microprocessor that implements the PA-RISC 1.1 instruction set architecture (ISA) developed by Hewlett-Packard (HP). It was introduced in early 1995, debuting in systems from HP. The PA-7200 was not sold openly and the only third-party users were Convex Computer and Stratus Computer, both members of the Precision RISC Organization (PRO). It was developed for small multiprocessing systems with two or four microprocessors. The microprocessor was first described at the Compcon and IEEE International Solid-State Circuits Conference (ISSCC) conferences.