HP microprocessors

Itanium (; ) is a discontinued family of 64-bit Intel microprocessors that implement the Intel Itanium architecture (formerly called IA-64). The Itanium architecture originated at Hewlett-Packard (HP), and was later jointly developed by HP and Intel. Launching in June 2001, Intel initially marketed the processors for enterprise servers and high-performance computing systems. In the concept phase, engineers said "we could run circles around PowerPC...we could kill the x86". Early predictions were that IA-64 would expand to the lower-end servers, supplanting Xeon, and eventually penetrate into t

thumb|Hewlett-Packard|HP PA-RISC 7300LC microprocessor thumb|HP 9000 C110 PA-RISC [[workstation booting Debian GNU/Linux ]]

family of 4-bit datapath, nibble serial, CISC, calculator, pocket computer and printer general purpose processors with 20-bit addressing capabilities and 64-bit general purpose registers

central processing unit

right|thumb|A PA-7150 microprocessor

thumb|A HP PA-8000 microprocessor The PA-8000 (PCX-U), code-named Onyx, is a microprocessor developed and fabricated by Hewlett-Packard (HP) that implemented the PA-RISC 2.0 instruction set architecture (ISA). It was a completely new design with no circuitry derived from previous PA-RISC microprocessors. The PA-8000 was introduced on 2 November 1995 when shipments began to members of the Precision RISC Organization (PRO). It was used exclusively by PRO members and was not sold on the merchant market. All follow-on PA-8x00 processors (PA-8200 to PA-8900, described further below) are based on th